Pokemon is a highly iterative franchise. Seems like each addition tends to add something. The appeal of new games is new mechanics and new Pokemon. Remakes tend to be about getting to re-experience something you haven't gotten to experience in a long time. Seems to me that most Pokemon games are offering you a very similar experience, so a remake feels redundant. I know it's going to be an unpopular opinion on a thread about Pokemon, but as someone who likes pokemon, but can't bring myself to play every game in the series, I'm trying to understand the appeal of a remake.
People like replaying games they enjoyed.
People like replaying games they enjoyed with additional content and features that have been added to the series in the 11 years since the originals even more.
If you're not the kind of person that replays games, then maybe remakes aren't for you - but for those of us that do, remakes are great.