not at all, look at all the teams that are doing good in regular season and even now in lcq, EG is a great example and teams like NRG, NAVI, FNC, PRX, DRX, LOUD all of these top teams (and teams who are winning LCQ rn like Zeta, TS, NAVI and KRU/LEV) had a core last year and kept going with it and trusting the process unless theres like a massive disagreement between players and coaches on how the game should be played or ego clashes within the team then theres no reason that teams should completely rebuild after a mediocre season especially sen coz they barely got any time to build chemistry coz management fucked them over every other week