yes you can be learning and growing in bjj all your life if you chose to, so there is no rush to find others
but it is interesting when other people come in, I actually can often tell what someone else trained in before they came to us.
you will have to be careful when wrestlers and judoka come in, it isn't that they are naturally like with a bad attitude but what happens is they have very limited time so they get very used to doing things with a lot of force and they often cause injuries when they first come to bjj.
it was mindbogglingly frustrating to me until I figured it out because the most dangerous guy in the room was not the most skilled guy in the room but at the same time he was one of the nicer guys in the room. so it was very difficult to reconcile all of that in my mind until I got it figured out. The Judoka wasn't trying to hurt anyone, he was just used to years of grappling where you have a small handful of seconds to get your submission in and working or be stood back up. he was only moving as he had been trained to move.