It's fine in isolation to have help text for complex interfaces needing explanation. Better yet contextual hints.
But there's about 10 other examples explaining intention of the coding rather than immediately useful information to the user, it's all over this one site in small grey text. And I guarantee you nobody is reading them carefully. Just like how nobody likes reading a 15 line LLM code comment over a simple function.
Most of it could be better solved with more thoughtful design or deleted. The link explanation is particularly egregious.