It isn't that the undersized comments are unfounded or BS... Makar is simply going to be undersized in the NHL and will have to overcome it. Look at it this way, Ray Bourque was undersized even though he was as thick as they come. Heiskanen is undersized even though he is average NHL defensemen height. Undersized in different ways, but undersized nonetheless. What has to happen with an undersized player is their positive attributes have to outweigh their negative to a higher degree. In Cale's case, his skating, anticipation, and stick will have to be that much better than a player that is 6'2" to defend as well. When looking at these things, it isn't as simple as saying 5'11" can't play... but more of are the positive attributes a player brings enough to outweigh the fact they are 5'11"? When we were all circling around the Jost #2C drain... my main argument was that Jost's skating wasn't good enough to overcome his size. Not that a 5'11" player can't play center at a high two way level, but that their other skills need to make up for their lack of size. I've pointed to Brayden Point in the past... he is a very undersized center at ~5'10" 160lbs, but his skating are smarts are so good that he overcomes his lack of size plus a lot.
With Makar, you have a player that is fully engaged on every shift and has a very high skating (and skill) level... you start having a basis of a player that can overcome his size detriment. I personally don't see Makar being a 200+ guy, but 195 is probably where he settles without it impacting his skating. No doubt that is undersized in the NHL at the average defensemen height hovers around 6'1" to 6'2" and 205-210 lbs... Makar isn't going to reach that size unless somebody just flat out lies when submitting their height/weight to the NHL database (which is frequently wrong BTW). So give into the size argument, but understand that is just one part of it. Look at if his positives can overcome his negatives. IMO Makar is clearly showing they will at the college level, and that he will be a very solid NHL defensemen. What level is going to be what he has to prove when he gets into the NHL later this season or next season. I'd say the signs are trending very positively for him to be a high impact player. I know people like tossing around comparables... the one I've heard lately is a bigger and better Ryan Ellis. The more I think of it, the more I believe that is spot on.