As an actual militant of the Brazilian Communist Party's youth, the Communist Youth Union, (UJC):

The situation is: the central committee that held on from the original coup in the party in 1992, despite actually holding onto the name, were a bunch of fucking revisionists for the most part (the PCB has a tradition of revisionism/reformism dating back to 1958) As new generation came in after 2013 to the communist youth, we got actually relevant again and the people doing the ground work actually learned shit for real, so in the last party congress (XVI, 2021) the CC started to feel threathened and started arbitrary expulsions and such, this culminated in an accord to keep most of the CC unchanged, get some dissidence in and stop the arbitrary purges. The actual party resolutions reflect more this new generation's work, but the majority of the CC did not change hands. So, 2023 rolls around and the CC majority starts violating resolutions (namely participating in a Pro-Russia "anti-imperialist" platform that houses many reactionary parties such as CPGB-ML https://wap21.org/). They do this in secret and do not inform the rest of the party, rest of CC finds out, threats against the ones trying to keep the party line start coming. Finally, the former secretary general (and oldest generation communist), Ivan Pinheiro actually releases to the public that even though the CC suspended participation in that platform, our secretary of international relations went to another meeting in Seoul (and a shit party's congress). So things go public and the outright struggle against the CC starts, mass expulsions ensue and actual communists start organizing a way to fight back and calling for a party congress, more arbitrary shit ensues.

A lot of old stuff comes to light, youth national committee is effectively dissolved by the CC, we just don't recognize it and keep on working.

Here's the national committee of the communist youth statement in english: https://medium.com/@guilhermestefano_24542/political-statement-from-the-national-coordination-of-the-uni%C3%A3o-da-juventude-comunista-communist-158035d27657

Just for reference, in my state the entire communist youth and two party cells were purged. The State Committee that did this has covered for rapists and sexual harassers (and is about to bring a sexual harasser that was part of it that left back in)

The youth is like 80% minimum on board with a new party congress to solve this shit (and at this point, a new name for the party pretty much). The percentage is only going to go up because we're fucking right and are going to expose them. Has been real shit to learn some "comrades" were just shit stains all along tho

TL;DR: petit-bourgeois revisionists can't stand to lose the ideological struggle, kick out the party from the name.

Edit: oh and by the way here's the manifesto in defence of the Revolutionary Reconstruction (name of the period since the near dissipation of the party due to long term revisionism from '92-present, the CC wants to say we are already done reconstructing) https://emdefesadocomunismo.com.br/manifesto-em-defesa-da-reconstrucao-revolucionaria-do-pcb/

You can find the actual debate tribune in that website too, to see what the actual communists are thinking. We're dead set on making this congress happen with our without the electoral registration in our hands

Also FYI: the youth is way ahead of the party, because we had relative autonomy from the bastards