Maybe if George had been stoned he might have enjoyed the play.
I got the impression George doesn’t think his mind needs further expansion after his experiment with the gateway drug.
One can imagine it much more easily than write it, or we'd all know the name of the great mid-century playwright George Templeton Strong.
On George's side, however, Wikipedia says that The Rivals was Sheridan's first play, and it was criticized for some weak characterizations when it came out in 1775.