Yes, as I explained in your other thread, by removing all the bedding in one go and every day, you are removing all their scent and causing them to need to reestablish every day. That is stressful for them.
Rumbling is a normal behaviour so they are always going to do it but it is very important with boars that you don’t disrupt their territories and hierarchy.
As I think you are using fleece, It would be recommended that you use smaller pee pads squares or bobble mats under hides where they pee most. That means you remove the smaller pads every day and can leave the main fleece in place for several more days. Thus leaving their scent.
It is also best to use two pieces of fleece - one at each half of the cage - rather than one fleece that covers the whole cage. Again, enabling you to just remove half at a time and then change the other half the next day.
Regarding food - make sure you have at least two loose hay piles so both pig can easily have access.
Also, don’t use food bowls. Instead scatter their one cup of veg each and one tablespoon of pellets each directly into those loose hay piles. They then have to forage for it which encourages natural behaviours, keeps them occupied and stops any food hogging by the dominant pig