Yep, the main problem with discussing exoplanets and all their characteristics is that the universe is just too darn big - and we've observed too little of it with all our instruments - THOUGH the amount of data that they collected we are STILL sorting through, even for out of commission projects (not only for exoplanets, but other astronomy projects as well). AI search algorithms has recently helped a lot with this. As it is, our predictions for extraterrestrial life largely revolve around the Drake Equation. At its inception on 1959, it was like all other mathematical equation's - with lots of variables. Now with more astronomical discoveries in the fields of biology, chemistry, geology etc we can eliminate the N's and L's and finally quantify it. TESS, Starshade and the James Webb AS WELL AS other endeavors will be the tools to do this obviously.
But there are quite a few other variable we'll have to plug-into the Equation before its even near completion. This recent business with Potassium be rarer then we supposed in our galaxy due to it not being released in as massive quantities as we thought from large stars dying is a good example - and since a a fair few of these exoplanets Kepler (as an example) has discovered are farther afield then our stellar neighborhood, I wonder if this that is one such unknown we must watch for.Perhaps life, even if many planets evolve suitable conditions, might be clumped here and there in our galaxy depending on region (rather like the galactic habitable zones).
We have so much data, and yet so little (the thrill of Sciencia... ahhh) that we can make only educated guesses as of yet and always question, refine and evolve/discard theories - making this a most interesting time to study astronomy and discuss it!
In the realm of speculation, there is indirect evidence for life on Venus - I believe with the Russian Venera probes they discovered UV absobtive streaks in the cooler upper clouds related to the acid-resistant S8 molecule:https://astrobiology.nasa.gov/news/could-dark-streaks-in-venus-clouds-be-microbial-life/
Oh well, at least they didn't detect blonde-haired "Space Brothers"