All of this. I agree with all of it, particularly "Lets throw away X and switch to Y, we lose all the domain knowledge we have with X but Y others this absolut

All of this. I agree with all of it, particularly "Lets throw away X and switch to Y, we lose all the domain knowledge we have with X but Y others this absolutely tiny marginal improvement, so it's worth it!" As a lead I spend a lot of time pushing back on adding stuff until someone has made the case why we should add it. You want to use Y, great - document why you want to add Y, what benefit it brings, who runs Y, where is the code, how many maintainers does it have, is it well tested, if want to remove Y later is it a big job, what does it offer that we can't currently do etc.