I don't really understand how you think either.
You're identifying something you see as a problem, how is whether that problem is costing us irrelevant?
If it's not costing us then maybe it's not really a problem?
Late goals which see a team drop points are going to happen. They happen to every team in every season. The question is how often. Is it something which is happening to us too often? If so can we correct that?
We did have a problem with conceeding late too often in games, often being too keen to go forward in tight games and getting caught. Maybe this tactic of going defensive at the end of games is a reaction to that. And actually since we started doing that we have very rarely dropped points late in games. So is it really a big problem? Wenger has been repeatedly criticised for doing it but very rarely has it seen us drop points.