There are lots of reasons people want vegetarian versions of meat. Here are some of the most common:
1. Still want to eat meat, but want to reduce the environmental impact of meat production.
2. Don't want to eat meat for moral/preference reasons, but still enjoy the taste of eating it.
3. Want to eat meat, but don't like the dietary impact and want a healthier replacement.
It's not trying to be this "best vegetarian food that you had that did not taste like meat at all, how it should be". It shouldn't be like anything. Both food options can co-exist. You're completely misinterpreting the niche it's filling. If I want tasty food, I'll eat something that's veg-based and tasty, not mock-meat. 90% of my diet is curries, chillies, stews or stir-fry's and I'm more than satisfied - but if I crave something that I can't/won't eat, you bet your arse I'm going to go for the worse tasting, greasy, salty, crave fulfilling option, be it an Impossible burger or some crappy cardboard tasting mock-meat.