That seems like a rather obviously wrong take. There were ample companies supporting Epic (or rather, fighting Apple) before they filed their lawsuit, which was also long before Epic acquired bandcamp.
Why would Epic acquire bandcamp as a "pawn" to use a year after their trial concluded? It's far more reasonable to assume Epic had a legitimate business interest in Bandcamp, and if anything, the execs of the companies had started talking due to the (concluded) lawsuit and shared interest in not losing 30% of their revenue.
08/2020 Epic files suit against Apple and Google https://en.wikipedia.org/wiki/Epic_Games_v._Apple
09/2020 Discussion of Epic vs. Bandcamp and app store fees: https://www.shacknews.com/article/120550/tim-sweeney-on-why-...
05/2021 "The trial ran from May 3 to May 24, 2021" from the same wikipedia link.
03/2022 Epic acquires bandcamp, a year after their trial. https://www.nytimes.com/2022/03/02/arts/music/epic-games-ban...
Why would Epic acquire bandcamp as a "pawn" to use a year after their trial concluded? It's far more reasonable to assume Epic had a legitimate business interest in Bandcamp, and if anything, the execs of the companies had started talking due to the (concluded) lawsuit and shared interest in not losing 30% of their revenue.