I think you are right princess emma.
lendl did not care much for the net either. he preferred to blast them off the court from the baseline.
I read somewhere that he did not have a topspin backhand when he turned pro. it was all slice evidently.
and then he got grounded in reality quickly. he learned that he needed a devastating topspin backhand to be a top flight pro.
It's all about who feels comfortable where, herc. Lendl was clearly more comfortable dominating from the baseline. The game at the net is the game of skills and perhaps Lendl didn't have that skill to begin with. A wise man once said, don't try to improve your weaknesses but rather work on your strengths and maximize those. There's a reason why some things come very naturally to you.
Sampras used to have a two-handed backhand in his early teenage years, did you know that? His initial coach had taught him to play one handed backhand so that was a big change. Also, he wasn't initially a S&V player and was more of a baseliner but in the early 90s, he switched to become more of a S&V player. He was a big fan of Edberg and all. Plus, he wanted to venture more to the net as if it was like a calling or something. Given all that, I see that he had gone through a series of changes and was comfortable with changing his style if he saw it fit. He was clearly a very talented tennis player who could switch his game to any way he wanted to.