The problem with him is not that people don't agree he's superb. The problem is that some keep trying to elevate him over players who were definitely or arguably better than him - R9, Muller, Van Basten, Romario, Batistuta, Kopa, Suarez, Benzema etc - which is disrespectful to those players asnd makes a mockery of their ability and careers. And worse, some of these people in their Lewa love call others clueless for rating those players above him, when it's actually very fair to do so and likely the right choice. So there's gaslighting going on too.
I made the point a while ago (Temptation even said it hadn't occurred to him before I said it) that Lewa is universally popular and relevant in the modern game, so gets a boost due to that. If Ronaldo or Messi were touted for a Ballon d'or due to a lot of goalscoring in Bundesliga, their 'haters' would point that out. But absolutely nobody pointed that out about Lewa.
Think about that - how often do we hear jokes about how weak German top tier is and how Bayern have a monopoly on it? But when their very popular striker is nomnated for BDO, everyone lsoes their mind and claims it's a robbery if he doesn't win it. Even though he did little special that season - scored a lot of goals in a league Bayern were winning every season anyway, and failed in CL. Nothing out of the ordinary.
This is an example of the Lewa love around the world. I have rarely seen a more popular footballer. he's universally popular. Most players are hated by someone, but you never heard a bad word about Lewa. This all contributed to him being overrated next to R9 or Van Basten - people like him and WANT him to be the best ever, even though he isn't.