Eh, spending money is a big fucking advantage. Not sure why anyone would try to relativate that. Even when you have clubs like United with the midas touch of shit.
Anyway, Xavi spend 150m on the frontline with the squad having no fundament*. Meaning we coudln't just splash it on one player but needed depth as well. Ferran, Raphina and Lewy are hardly great, but taht's what you get for 50m each. I fail to see the alternatives as well. Sure, Alvarez would have been nice, but then who? Not big on the likes of Antony, Diaz, Gekpo or Nunez (who else switched clubs in the windows Xavi was Barca coach? Harry Kane and Haaland were both impossible).
150m on a whole front line isn't a shit ton of money.
*Remember we came from a team with the likes of Abde, Adama, Jutgla, Demir and co being relevant.