This will be long, OP, but I read through your posts, and I ask that you read through mine.
So, you seem pretty antagonistic, OP. You asked:
If Dota is better why don't more people play it.
Then people will respond with something like:
LoL's unlocking system means that it's harder to let go.
And you respond:
So that's a bad thing?
Your follow-up question is irrelevant because the original response didn't make a value claim about LoP's unlocking system other than that it was harder to let go, and therefore made LoP more popular. They didn't premise that point by saying the system was worse; they were answering your original question about why LoP is more popular.
It seems to me that you're not really asking a question, you're offering this syllogism:
/r/dotamasterrace claims that Dota is better than LoP. LoP is more popular than Dota. If /r/dotamasterrace's claim is true, then each specific reason that makes LoP more popular must also make it a worse game. Not all of the reasons for LoP's poularity are bad. Therefore Dota is not a better game.
This is a really poor syllogism, as any first-semester logic student can tell you. LoP can employ tactics that are either neutral to or better than Dota's that will make it more popular, but Dota can still remain a better game.
Compare this syllogism to the Chicago Bulls in the 1990s. In 1996, 1997, and 1998, the bulls were the national champions. Kobe Bryant, who (whether you like him or not) had his rookie year in 1996, was probably a better player than many of the individual Bulls players. But swapping in Bryant for one of the Bulls wouldn't necessarily make the Bulls better—it would probably make them worse, because Bryant's personality would probably clash with the Bulls' play style. If we could put numerical values on each player's skill level, the sum total value for the Bulls might increase by putting Kobe Bryant in for Bill Wennington, but the team would still be worse.
Similarly LoP might have a more addicting grind system, they might have better advertising, and they might have more word-of-mouth—and all of these individual parts might actually be better than Dota's counterparts. But that doesn't meant that LoP is better than Dota.