This is really interesting. I *think* this is just this year's weird anomaly, like not being able to win on Sundays or the comical number of first inning runs. If weather or wind was a more obvious culprit I'd be more convinced it's permanent given A) global warming and B) all the new developments around Wrigley, particularly the place across the street on Addison that's taller than the park itself.
Reading this I got curious about prior years. So I pulled Flyballs + Line Drives by venue, and then what proportion of those were official Barrels. It's a bit different than what you did, but mainly because it's less work rather than because I would quibble with your process. But by this definition Wrigley ranks 19th, 16th, and 24th year by year from '22 to '24.
I'll also note that some very good hitters parks tend to rank consistently towards the bottom here. GABP in Cincinnati, probably the #2 hitters park in the league, ranks 30th, 28th, and 25th the last three years. It might be a situation where hitters come out of their approach when the conditions are too favorable. We see this at Wrigley sometimes when the wind is howling out and we still get like a 2-1 game.