I've had multiple airfryers, not against them per se. There are some things they cook better IMO. Cocktail sausages come out well. Whole chickens too. Anything you can fit the relatively small dimensions and either lays flat on the bottom or can withstand agitation/stirring AND has good heat dispersion / circulation. Small portions work better. Generally they're easy to clean although steel baskets and plastic fixtures on tend to be very flimsy and they don't last more than a year or two of regular use. I even had an airfryer which had this stirring mechanism in it which supposedly negated the need to turn stuff over but often it just caused some foods to disintegrate into starchy crumbs.

As for consumer ovens, can't say I've had any major issues ever with them, be they electric or gas. They're less efficient and slower to warm which is their downside. Once they're up and cooking I think they work fine and are obviously more versatile.

Pick the best tool for the job at hand basically. I think also, that something like an instant pot (or similar) is a better and more versatile device to buy before an airfryer.

I have a convection hob that plugs in and it's way better than the electric elements built into the stove for most stuff.

I'm not going to cook a whole turkey any time soon. Bigger ovens like this are a product of post war consumerism.

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