re: Not like earth, yes, but....
The M star HZ is SO narrow (typically about 1-2% of the sun's HZ) that any planet has considerably less probability of orbiting within its HZ. Astro commentators blithely neglect this physics fact when citing the higher # of M type stars.
Rare Fs at 2-4 sols could fit several oceanic planets co-mingling in a very wide liquid water HZ. Too bad they don't stay on the main sequence halfway long enough for the > 4 Gyr process that the Cambrian explosion and land life took here.