I agree that best of 7 matches aren't the best, however I think in general what Barry Hearn has done for snooker in the last few years is fantastic.
There are more tournaments, more players in them and less of a comfort zone for the top players. Look at the Grand Prix for example, won by Barry Hawkins in 2017 and he didn't even qualify this year, that would never have happened in the past.
I also like the Shootout which is great for re-distributing some of the wealth amongst the lower earning players, Michael Georgiou earned £32,000 for winning that a couple of weeks ago.
It's also getting much more exposure as a sport thanks to the (in my opinion) great coverage by Eurosport, while ITV4 and BBC also carry some of the tournaments.
I do agree that none of the finals should be best of 7, I think they should aim for best of 11 in semi-finals and best of 17 or 19 in finals. But by introducing 128 flat draws in virtually all tournaments, this is what we're left with.