I just wanted to point out I don't think anyone ever expected BotW levels of either graphics or ambition. After all, this is Game Freak we're talking about here. It's not that people expect it to be like that - it's moreso that people are questioning why it can't be like that, when it's a franchise that's consistently sold massive numbers, much higher than those of Zelda and even Mario (3D). By all means, it should at least be as ambitious looking as those two are based on sales, if not more. It shouldn't be a matter of whether Game Freak is or isn't experienced with HD development, because when it's a franchise this big, the normal thing would be for there to be a massive budget and other development teams (who already have experience, in this scenario) helping out. Most people never expected this to happen, they're just questioning why it can't.
Sales don't really determine that though Minecraft is one of the top selling games of all time but I doubt any future game would deviate much even though it's outsold many ambitious titles because people are buying it for a reason other than that. I think this is also more so one of those things that's more a forum goer issue because the reception on social media platforms was a lot different highlighting that despite the discussion here GF have for most part provided what their fanbase wanted it's clear the series sells more on the unique charm than pushing tech hence why all similar games that do match the ambition people say the should such as Ni No Kuni don't even come close to its success and that's telling as to why GF approach things the way they do.
The overall fanbase just aren't really looking for that which is why they keep selling they're more focused on the evolution (no pun intended) of the series unique charm that drives the Pokemon subculture.