casino says repeated neighbour bets are “non standard play” whatever that means

So the pit boss pulled me aside saying I can’t keep putting the same neighbour bets down every spin, calling it “non standard play.” I’m just covering numbers 8-12 with the standard split and corners, nothing fancy, but apparently repeating it for about 30 spins was the issue. Didn’t realize that was against their house rules since I’m not tracking any outcomes or anything, just playing my pattern for the session.

Anyone else been told that’s not okay before? I always thought as long as you’re not messing with payout odds or slowing the game down, you could bet your way. Kind of weird since the only “system” here is stubborn patience, which doesn’t even guarantee much. Curious if others ran into similar pushback.