They're not "inherently flawed". Color laser doesn't come close to the same high quality photo prints. If printing high quality prints is something you regularly do then inkjet is your only option.

It's not that the technology is inherently flawed, it's that way too many people are buying them for document printing when they should instead be getting laser printers. Inkjets are much more of a niche specialty product.

Depends on the ink. My HP Latex can sit for months and then fire up and print like nothing happened