It's ... complicated.
If you go to an extreme, of course most people will agree with that statement, but most clubs are not going there.
I enjoy the challenge of fast/firm greens -- as long as they suit the course. That's a tough needle to thread, but I like when a course/club tries to thread it, rather than giving up and having soft/slow greens all the time. Also, keep in mind that threading that needle is very region/course specific.
For instance, in my region (Inland SoCal), it's common for greens to be very soft and 9 - 10ish in the late spring and all the way through early fall because it just gets so damned hot mid and late day. You have to dump water on them in the morning to make sure the poa annua lives through the day! I get that. So we have very soft, slow(ish) greens for six months of the year at most courses around me, my course included.
Now, come late fall, we can firm up the greens and speed them up if we choose -- which I very much like. Our course is simply a pushover when the greens are soft. Good players shoot in a very, very narrow range on our course when it's soft and slow. You can attack virtually all pins, and the penalty for short-siding is greatly reduced when you can nip short game shots and get them to stop to virtually any pin from virtually anywhere.
Just one foot of stimp difference and a 30%ish increase in firmness gives our course a little "teeth" and makes missing in certain places a true penalty -- which is should be!
I could go on and on about this, but just know that lots of players do like fast(ish), firm(ish) greens precisely because they are more challenging than soft, slow(ish) ones.