Some people are pointing out how rare it is for GitHubbers to express gratitude, but GitHub doesn't exactly encourage it. Doesn't it feel inappropriate to express gratitude as an "issue"? Maybe if there was a natural place for these messages they'd be sent more often. To the extent that there are affordances for it (stars, emojis) it is actually quite popular to praise good work on GitHub.
This is what I wonder. I've opened "thank you" issues before, and wondered "how much will this annoy the owner/watchers?" For anyone tasked with maintaining a repo, any email notification of new issues must come with a certain level of dread. At least that's what it's like for me, even if I sincerely appreciate and enjoy receiving issues! I do, then, immediately close "thank you" issues so owners are not tasked with…
I've deliberately not opened "Thank you" issues, because I didn't want to annoy the owner/watchers. Certainly frustrating there is no way to express gratitude.