In almost all situations where one could use CSV, a better, more structured, more standards-compliant, more optimized file format (like a SQLite database) would be a better choice.
The Library of Congress has a small amount of SQLite files in its collections.
The Library of Congress also cites CSV [2], Comma Separated Values, as strictly specified in RFC 4180 as a acceptable dataset format. No other types of free-form CSV that aren't variants compliant with 4180 are accepted, and it also says that documentation and metadata needs to be supplied with additional separated archives in supported data formats.
The Library of Congress has 0 CSVs in its collections, and as a result no experience actually handling it.
I believe that if a widespread format such as CSVs have 0 files added to a reasonably well known and encompassing collection of human artifacts related to culture even with its ubiquity, it's a telltale sign that it isn't a standard at all.
[1] https://www.loc.gov/preservation/digital/formats/fdd/fdd0004...
[2] https://www.loc.gov/preservation/digital/formats/fdd/fdd0003...
Furthermore, the LoC's job is archiving. Your links have "preservation" in the url for a reason, and "preservation" is not what people do with spreadsheets. To strive for relevance, explore https://data.gov, where CSV is abundant, because it's in use by literally hundreds of state and federal agencies, often by people using spreadsheet software, and will continue to be so for years or decades to come, whether you understand why or not.
edit: Your assertions are wrong anyway, as the LoC does indeed have CSV artifacts in its collection. It is most often in a Zip file and catalogued as "compressed data," which is probably why your perfunctory search did not unearth it. Some random counterexamples to your claim:
https://www.loc.gov/item/2022482299/
https://www.loc.gov/item/2020446966/
I did not conflate database and dataset. I specifically described the two types. The Library of Congress specifically describes the two types.
You decided that "others" think that database and dataset are conflated, and that they are wrong.
> edit: Your assertions are wrong anyway (...) Some random counterexamples to your claim:
It's not my assertion, it's a assertion by the Library of Congress itself. The Library declares that it has no experience directly handling CSV.
> "LC experience or existing holdings": None in relation to collection holdings [1]
> "LC experience or existing holdings": "Report of actual practice at the Library of Congress." [2]
[1] CSV, Comma Separated Values (RFC 4180) - https://www.loc.gov/preservation/digital/formats/fdd/fdd0003...
[2] Format Descriptions: Explanation of Terms, Local Use - https://www.loc.gov/preservation/digital/formats/fdd/fdd_exp...
You asserted that "In almost all situations where one could use CSV" there would be a better choice, and suggested a database format. Aside from weasel words like "almost" making the statement inapplicable, the assertion itself is impracticable, for the reason I discussed, viz. in most situations where one is using CSV, one did not choose the format. Nothing you have said (or, I speculate, can say) contradicts this central point.
Your blathering about the Library of Congress is completely useless, since you appear to extract from a specific datum (the Library of Congress preservationists reporting no preferential experience with the format in relation to their collection) the irrelevant misinformation "The Library of Congress has 0 CSVs in its collections," which has a remarkable combination of qualities, i.e. not only does it have no bearing on the topic of this thread, it is also a lie, or at the very least a mistake borne of an inability or unwillingness to read the text you keep linking.
So in conclusion, nothing you have contributed to this discussion is of use to any office suite user while considering the ease of opening CSV files, and even if the information you have provided were of any utility value, it's not reliable. Congratulations on a perfect record, then, of not helping. I hope for the sake of those around you that your skills at identifying relevance and pursuing accuracy increase markedly and quickly.