This seems like it's more intended to promote Airtable than actually provide information. I've never heard of Airtable but it doesn't seem to be a good format for long blocks of text.
This is for US residents and visa-holders creating a US-based corporation doing business primarily in the US. If the majority of your income is generated outside the US (even Canada or Mexico) this probably won't help you too much.
Nothing within the article applies or helps EU or Asia-based startups.
[0] https://airtable.com/shrOQ3Gf4Hs3Gvvvc/tblbXrHGAKizU1U4P/viw...
I would also add that, while I'm certainly biased, there is benefit to making this a "cloneable" database that you can then use as a personal checklist, add notes, further attachments, etc which you wouldn't be able to do with a simple blog post, for instance.