I think more than FIRE people should just focus on FI. You still have to do something with your day after becoming financially independent and a job is still one of many good ways to contribute to the community even if you don't technically need one. So retiring is an option but not the only one.

On the other hand it remains quite confusing that after centuries of capital achieving vastly better results than labour people still keep going for labouring as their primary strategy. Building up a strong income-generating capital base is just common sense and it is an extremely good idea to have enough that you could technically avoid working if it made sense.