I mean I can't speak for everyone but in my mind, sending lmgtfy was not only always insulting, it was meant to be. It's saying "I know you have access to the tools you need to answer this question, why are you asking me, and here's some instructions on how you use this tool in the future so you don't need to be asking me foolish questions."

And while I generally believe we should be pro-social in our communications both with each other as software engineers and with others who don't know what we know, I think it's also fair game to point out that the thing being asked of you is commonly available knowledge. Google may suck as my sibling comment points out, and I agree, but filtering good info from info dumps, be that Claude or Google search, is a life skill that's more critical now than ever. And if you work in tech, really at any level, you know how to do that.