Looking at the current conditions, it seems that this is indeed important, but the problem is that Xavi doesn't pay much attention to this and doesn't seem to care much, even though if you look at the current conditions, Pique is not there, plus next season, the possibility of losing Alba and Busquets, they should be prepared from now on. but Xavi is only focused on their attack line, there are even rumors today that they will also bring in a striker again.
This will look lame actually when a good line of attack is not accompanied by a good line of defense, so of course the results will be a little difficult even though the best defense is to attack but we also have to be aware that an imbalance occurs for a team so it will be difficult for them to navigate the season.
Looking at how much money they already spent, and looking at how much salary would be emptied by those players being gone, that means that they will have a chance to get a good amount of players for those positions. Their centre back is already covered, Pique is already gone and they are playing, Alba and Busquets could be gone and with that salary cap and transfer fee they will spend, they could get 2 great players there.
I do not think that it really matters to Xavi because he knows he could get great players. Look at last summer, they were said to be doing no transfers at all due to financial issues, and they spent 100+ million on this team even with that issue.