Bustadice, in my opinion, has focused quite heavily on players who want to play thousands of games in as short a time as possible. That's why, for example, there is native script support, which is hard to find at other casinos.
Someone who only wants to play for 5 minutes for entertainment is more likely to look for a casino with slots etc. where a lot of emphasis is placed on the presentation (graphics, sounds, ...). But that is certainly not the target group here
Especially for the heavy players Bustadice is certainly the most interesting platform and has the most interesting implementations featuring these type of players, that is true.