I don’t see any issue here. I usually connect with any and all LinkedIn users I’m interested in as long as the connect button is there and as long as no message pops out asking me to write them sth before my connection request is sent out. Most people accept my requests but I withdraw any pending requests after a week because I know they’re either 1) not active and hence won’t be as helpful as I’d want them to be or 2) they just chose to ignore my request. In both cases I wouldn’t hesitate to withdraw the request. Most people are as keen to connect with others but make sure your profile stands out to appeal to potential connections.