Reninds me a bit of Jason Robertson. Lots of upside. His skating to me isn't as bad as it looks.
It is the case if you compare him to most players in the CHL, players that will never see the ice at the higher levels, but let's not act like Del Bel Belluz's (I'll use "DBB" from this point on for brevity's sake) skating technique isn't absolutely awful for the NHL as it stands right now, because it unfortunately is.
His strides are choppy and way too short for a 6'1 player. DBB doesn't get low enough to build power through his skates and his ankles seem pretty stiff / don't flex enough to build good momentum. A lot of power and impulsion is also wasted by him rotating his torso uselessly when gaining speed (reminiscent of Kotkaniemi in that sense). Agility and edge work still need tons of work, and his balance is also pretty suspect as he falls over too easily despite the fact that sources like eliteprospects say he is close to 200 pounds in weight and so should have a strength / weight advantage over a lot of his peers. His backwards skating is pretty decent for a forward, but that's not much to go on.
In short, DBB falls over a lot, his acceleration is middling even in the OHL, his top speed is very clearly below-average for the NHL, and his changes of directions and pivots are slow and heavy when compared to even borderline pros in the AHL/ECHL.
I say that but I'd still take him around the 20-25th rank at the draft as I absolutely love DBB's game and feel that there is still much room for him to grow into.
Right now DBB is a sub-par skater, no two ways about it. But skating is an attribute that players can, and will almost always improve. For many players the improvements they see from the time they're drafted to their peak is only marginal or small, but for others, like the John Tavares' of this world, the positive changes are absolutely incredible.
Which leads me to my next point. While we can honestly say that DBB's poor skating is a great detriment to his game as things stand today, there is also potential upside there. The simple fact of the matter is that DBB is a poor skater predominantly because his mechanics are just plain bad, not because he lacks athletic / natural ability.
To illustrate my point better, if, for example, DBB showed the same weakness of skating while having mature, refined technique as a skater, then the prognostics of his potential improvements would be based only on physical growth on his part and thus reduced by a non-trivial margin. That loss of growth potential would make him much, much more of a project at the NHL level and scouts would rate him lower accordingly. In that hypothetical situation I'm pretty sure he'd only get drafted near the midway point of the second round or perhaps even later.
But luckily (?) for him DBB's skating woes are very heavily mechanics-based in my opinion. And since that's the case it is possible then, though we must still face reality and understand that it is not the most probable result, that DBB will manage to shore up most of the egregious flaws in the way he skates by the time he is ready to turn pro, in maybe two, three years. With hard and carefully-planned training, we could then possibly see a massive increase in his skating ability as a player, which would make his life so much easier at the NHL level and possibly make him a permanent fixture in a team's top 6 (and I also think he could still get there even without the major upgrade to his speed simply given his skill/smarts).
If my team, the Canadiens, manage to obtain another first-round pick and select him then I will be pretty happy despite the obvious risks involved. DBB is just a really good player and I like him a lot as a prospect.