I feel so sorry for the FSSP (as we can be sure what they're likely about to face).
I like it. It was just a table, but they made it look like an attached altar, and they're among the few left in the conciliar church who I assume are properly consecrated and who hopefully haven't auto-excommunicated themselves. So given that, and that they don't have an attached altar to begin with, I agree that their intent matters a lot. They show reverence to the altar after the tabernacle is set up (taking a knee before the altar, some bowing, very few with their backs to the altar) — very nice to see.
I just hope all their altar boys don't dress in street clothes like that one kid. No idea where that kid came in since the video's speeded up, but I think if you're near the altar and serving, you need to get out of the street clothes and into something consecrated.