My best buddy started playing pickleball this spring after following me into retirement. We have been playing tennis together since grade 6 but he stopped a few years ago due to back issues. Tore his Achilles tendon 2 weeks in! I watched them playing at the community centre a few times and could see how it happens. That no go zone is brutal for a previous tennis player!
Yesterday was the one-year anniversary of the one and only time I played pickleball, resulting in a ruptured right achilles tendon. I haven't played since, and probably won't ever again. If I do it will be subdued. I played a lot of platform tennis, and like tennis, getting to the net is king, if you are young and agile enough to cover the deep lob, which at 65 I am not.
Anyway, to Ready's point, it can be tough either way. My wife has taken up the game, and loves it. She has advanced from beginner to advanced beginner. In the summertime we are north and there is no formal ranking system available, but when we return to The Villages there will be. She often finds herself overmatched. She says generally the players are kind, but sometimes the better players just slam it at her to get her off the court. But then when they need a 4th they want her to play.
As a platform tennis player, and I was an advanced player, playing in tournaments all over the northeast, against nationally ranked teams (getting my butt kicked) I played many a set at home, split up from my partner, and we always played down to the weaker players so they could get some returnable shots. The only times we got really frustrated were when the weaker players wouldn't take any strategic advice and would just try to slam everything, either into the net or out over the back line. Paddle is a winter game and you have to have extended rallies or you freeze to death.
But back to Ready's point again, it's tough either way, being the better players playing with beginners, or being a serious beginner who wants to learn and advance, and finding slightly better competition to help you along.