Well there's certainly a mixed bag here of what should stay and what should go. I think this is where NASCAR really needs to concentrate their efforts and gather real numbers from knowledgeable fans. What do you like and not like? What would you like more?
IMO on the Clash, I don't think this is an isolated decision by those in-favor of something different, the same as it isn't for the All-Star race imo. I would venture a guess that some fans have long not seen the point of either one and do not understand the need to run these half-field exhibitions, ultimately resulting in unnecessary wrecked race cars. The low hanging fruit is, yes, we're ecstatic that cars are back on the track, in a similar way we're for practice and qualifying at the beginning of the year imo. There is a plethora of lead up into the 500 imo, so why?
It may be purely a business decision for them. But, again what does this do for advancement of the sport? Is NASCAR foregoing an even better business decision by not offering something new that counts? Like their gamble on the Charlotte Roval for instance. Continuing with that, I think it is abundantly obvious that the Daytona Infield should be on the schedule in some form or fashion. If you're giving me the choice between that or the Clash, I'm choosing the Daytona road course every time.
I also think some fans that are perceived to be arguing for less racing, are just desperately wanting NASCAR to improve their offerings, they are tired of the repetitiveness and/or squandered opportunity of what could be.
This is a huge topic that bleeds into many other areas of discussion unfortunately, it will be hard for NASCAR to tackle all at once, but it can be done in small pieces.
I wish Jim France and his team of decision makers all the luck in the world, as they surely can't please everyone, they can deliver the best version of the sport they deem possible for the fans.