Everyone should aim to be this lazy. Everyone is trying to maximize their time. This is what software has always done. It helps people be lazy in some respect, and then, so far, we have always found new stuff to do with the time we freed up.
LLMs got decent at writing, and before long they will be better at write-ups than the average human writer and we won't look back.
Of course, this is contingent on your current goal: If you want to get better at writing, you should do the writing, just like you want to do the math, if you want to learn multiplication. Writing is fine as a tool just to get information across. It needn't be more than that for everyone.