I agree with @opentype I don't think IPS changed much but what I do think is that there is room for improvement. Probably an opportunity for someone to come out with a paid app/plugin or two to create a more robust sitemap, add some additional SEO settings with more dynamic and adjustable meta tags to include tags, adjustable description lengths, bring dynamic keywords using tags, default keywords per forum, page titles, etc. Keywords may not be Google's thing but are still picked up by other sources. Interesting reads regarding description lengths in 2018:
https://moz.com/blog/how-long-should-your-meta-description-be-2018
https://searchengineland.com/google-officially-increases-length-snippets-search-results-287596
https://searchengineland.com/google-fundamentals-writing-meta-descriptions-not-change-longer-search-snippets-288414
I haven't looked into the IPS code that controls the current cutoff but was interested in testing this out by increasing the current dynamic description tag to see if more info is picked up and weighted better.