Yes and no. Because Prusa are good machines. But one of my printers is still a "normal" MK3. It is working good honestly, but I already thought about upgrading to a multicolour unit (mmu2), but an upgrade to a "near" MK4 sounds good, too. the full upgrade doesn't even cost that much more as I have just seen. And I would have a base that can run the mmu3 then.

In general prusa is a good brand and I love that they look to have a long product life for their products. As far is a know the always provided upgrade kits for their printers. They upgrade firmware years after they released their products. The ecosystem is great (Hardware, Software, Material, Support and Community). This approach needs to be honoured by buying products from such a brand!