I think this is one of the problems right... boosting is annoying plus many players don't know how to do it properly. When I have boosted rubbers in the past I don't always get my rubber the same each time which is annoying. Having rubbers you can just put on your bat and play is much easier.
Are the new European players (Truls, Darko, Lebrun brothers) catching the new young Chinese players? I feel 10 years ago the new generation of young Chinese players were always levels above the rest. The gap seems to be closer now 🤔🤔