I have cheap Tasco and BSA scopes on a couple of my .22 rifles. They work, but, they are nowhere near higher quality scopes. You do not get the high degree of clarity you get with more expensive models.
However, those scopes are a step up from the iron sights usually found on mass produced .22's. My cheap scopes have attained and held zero quite well, thank you very much.
That's not to say there are those who don't get lemons now and again or find the scope is not up to their standards. That is easy to see too. These budget scopes are just that. You get what you pay for with them.
For .22 scopes, the BSA and Tasco are as accurate as the ammo used and, in my case, the village idiot working the trigger. This has been my experience with the budget scopes.
Now, you can easily get great performance out of a more expensive and better quality scope. I mounted a Leapers 3-9x40 scope on my Winchester 150 and am VERY pleased with it's performance. It's not a high ender, just better quality than the BSA or Tasco. The clarity and performance of that rifle/scope pairing is awesome to me. It's dead on with whatever ammunition I use in it. Sometimes I have to make sighting adjustments depending on what ammo is being used. I don't fault the scope for that. That is strictly a function of the ammo and rifle. After sighting in for that particular ammo, it's a thrill to shoot.
I imagine I'd be even happier with a Nikon or one of the super-duper high end scopes too. Then again, I expect if I switched from shooting, say Mini-Mags to Federal bulk, I'd have to adjust those scopes too.
Anyway, if budget scopes work for you and your good with the performance your getting from them, your golden.
Accuracy=happiness in the gun world.