https://aws.amazon.com/blogs/aws/amazon-redshift-the-new-aws...
But if you try to use the same schema design from a standard Postgres database and use the same query patterns, you will be sorely disappointed. Redshift uses a columnar store and is an OLAP database as opposed to Postgres which is a traditional database.
As is not doing it.
Perhaps you did not mean to use the word "appropriate"?
Did you copy their inventions 1:1 and rebranded them as your own? No you didn't. You just used them which is different.
On the other hand, fulfilling a request can, and often will, lead to a positive. It's still a request.
If you're going to be upset about it, don't phrase it as a request. A big chunk of the population will be annoyed by it.
Soapbox aside, getting to your comment: If someone is giving me that money unsolicited, I may or may not give a thank you. Context is extremely relevant. I did not give a "Thank you" to the recent stimulus check, for example. And I've definitely had fights with people voluntarily giving me stuff over and over and complaining about my not saying "thank you" (or even worse, not reciprocating). I've had to forbid them from giving me gifts in the future. I'm not saying my attitude is the norm, but it is "one of the norms".
The book Influence covers this topic in a lot of detail, and this is commonly discussed in Negotiations books. The bottom line: Be wary of gifts, and either reject if you suspect reciprocation is desired (which could mean "Thank you"), or make the understanding explicit and keep the reciprocity in mind. Of course, this goes at odds with several cultures.
As much as we like to talk about "open source" culture, it doesn't exist. It gets argued to death every time it comes up, which is a good sign it doesn't exist. A big chunk of the SW world, if not the majority, do not feel a need to reciprocate - even with a thank you. (Most of that chunk are OK giving a "Thank you", and this is not a contradiction).