To be fair, it should be attainable. We finished with 81 points on Jose's second season, and people were not happy and wanted more. Ole has been here for 20 months now, and by next season he would have had 3 transfer window (not counting his first one in Jan 2019 cause we did not sign anyone). It is perfectly reasonable to ask for circa 85 points, I mean, that is what we asked from Jose. Also, there has been a lot of 'since Bruno came we were awesome, so Ole is awesome, the first half of the season does not matter' going on here from "Ole forever" brigade. In truth, if we interpolate the results of the matches with Bruno over the entire season, we end up with 86 points, so I do not see what is wrong with actually asking people that next season, Ole backs up that hypothesis (especially with new signings coming).
It does not really matter that in the past 81 points were enough for the title, the league has changed and the standards have increased. In 4 of the last 5 seasons, the champion had 93+ points, in the last three, the champion had 100, 98 and 99 points. Even an 85 point scenario would likely leave us with more than 10 points gap with the eventual champions.
Personally, I would be happy with a solid finish in top 4 (typically needed 75-80 points for that), but I do not see anything wrong with aiming for more.