There’s a difference between obviously absurd ideas and those that someone can go off and try in their own codebase. Giving some breathing room so people can experiment and try things on their own without disrupting the product is being supportive, in my opinion. It doesn’t mean everything should go in. But I give the person the opportunity to sell their idea. Maybe it’s better than I think, or maybe others on the team will support the idea. Unless you’re the only competent person on the team, if the team thinks its a good idea then why not? If you’re the only competent person on the team however, you should really leave the company.

It’s the same thing with code reviews. I make a distinction between issues of opinion vs issues of correctness. I will never let incorrect code get checked in, but if it’s a matter of opinion, then I’m more lenient to let things in.