Very good point on the quarantine.I wouldn't say Lake Placid is "high end". It's probably no more expensive than Okemo.
But it is definitely "higher end" than Killington, which to me is really "low end" in terms of ambient and anything besides skiing. Nothing much to do after the lift close. Lake Placid is definitely one of the more interesting destination. But the skiing... not so much. Especially for beginners.
Still, why drive all the way when there must be several smaller mountains closer by? Someone mentioned Gore. I don't know about its beginner terrain. But it's a low key place. I think it's better than the mad house scene at Killington.
The only condition I would recommend Killington is if you're staying a whole week! By that point, your beginner will be quite improved. Then the vast terrain of Killington will be worthy of its fame.
Oh, there's also the small issue of Killington being in VT and you need to quarantine... Lake Placid and Gore are in New York.
And Killington's Access Road has (or maybe in this COVID era "had") lots of bars, clubs, restaurants, etc.