And I'm saying that your personal opinion isn't proof of anything. It's not the second favorite for a lot of people because they have different preferences than you do. It's not just "acceptable", it's an enjoyable game. Given infinite time to play and resources perhaps I could find a different game that I prefer more but that's irrelevant. There will always going to be some hypothetical "better".
Calling people who play and enjoy D&D "the great unwashed masses" because you happen to like other games is an insult. The majority of people who played D&D in the 21st century have been playing 5E because of it's increased popularity (which has many, many factors), but plenty of people jumped ship during 4E. I gave 4E the old college try, when I decided it was no longer working for me I considered options. As it happened 5E was that option.
There is no "best" product for everyone. D&D 5E is not everyone's second choice, even if it is the second choice for a vocal minority.