I've also become way less interested in watching "great" matches the last few years. In particular, the common deal recently where the people in the ring are obviously trying to "work a great match" rather than "tell a story in the ring" just puts me off entirely these days. Hopefully that's clear enough and I don't have to explain it further.
I find myself getting a lot more pleasure, most of the time, out of a simple "three star" match where everyone is working safely and within their own reasonable limits and everyone has a clear role and character and the good guy is doing good guy things and the bad guy is doing bad guy things... I prefer being honestly and simply entertained for ten or twelve minutes to watching guys risk their health to try and blow my mind for half an hour.
Since moving to Japan, I have come to enjoy going to live events with my drinking/wrestling friends so much that - even with the huge amount of wrestling footage available now - I only watch a tiny handful of matches on my computer in a given month. I just enjoy it so much more as a social thing.
To me, it's clearly Giant Baba. AJPW was consistently great from the mid-70s through the mid-90s. The wrestlers, the matches, and the long-term storytelling from his peak period as booker are all still at or near the top of every reasonable discussion of the best ever in pro wrestling. He managed to raise two successive generations of great stars and great performers (the Jumbo/Tsuruta generation, and the Misawa/Kawada/Kobashi/Taue generation). He never booked an embarrassing or stupid angle or ruined a potentially great worker by sticking him with a terrible gimmick. He phased himself out of the top spot and allowed others to shine. Although he was independently wealthy thanks to good real estate investments he traveled on the same bus and stayed in the same hotels with "the boys" until the end. He is almost universally beloved by everyone who ever worked for him or knew him, which is pretty rare among wrestling promoters.
Ultimately, it's his amazing body of work that makes the case for him. Two solid decades of booking a promotion that provided some of the very best wrestlers, the very best matches, and the most compelling storylines in the entire world of professional wrestling... with no glaring mis-steps along the way... and leaving an unimpeachable legacy.