Okay, let's recap.
At the beginning of the series, the Rising Volt Tacklers are introduced as some sort of freelancer team that does contract work. They were hired by Liko's father to rescue her. We also know that money and resources are an issue for the RVT. They were nearly out of money and wanted to deliver Liko to her father ASAP to get their pay, and they carefully track the resources being spent on the ship (food, medical supplies, airship parts, etc). So while Liko had a pleasant time with the RVT, their relationship is ultimately of a client and a service provider (whose service has been fulfilled), and the RVT's foremost priority is to do jobs to make money and stay afloat.
At the end of the last episode, the RVT delivered Liko to her father... and then she imposes and decides she wants to continue riding on their airship. She doesn't even hint at the idea of being hired to be a part of the crew and work to help keep the team afloat. She seems to just want to freeload on them, taking up valuable cabin space that could go to another member who actually does work, and eating their food too.
It's bizzare that the anime is treating gym leaders as if they are powerful trainers. They never were. Brock and Misty lost battles in Indigo League and struggled against Giovanni's Team Rocket. Roark struggled against Team Galactic in Galactic Battles. Cilan and Iris also lost battles in Best Wishes and struggled against Plasma. Clemont in XY lost battles and struggled against Flare. Being a gym leader ≠ being strong. It's more like being a league sanctioned proctor or tutor who tests trainers on basic knowledge and competency. If Nemo wants to hype up fearsome Pokemon League trainers, then she should be talking about the Elite Four. We never saw an E4 defeated until the Mega Evolution specials.
Overall mediocre episode. 2/3rds of the episode was people standing around while Colza talks about art and feeling down. Last 1/3rd has a battle Roy and Colza, but there isn't any tension here. There are no stakes. Roy isn't super invested in becoming a Pokemon champion like Ash was. Ash's first gym loss to Brock felt devastating, but here Roy losing to Colza is like whatever. He doesn't even walk away having learned a lesson like Ash did and realizing that he needs to acquire new skills and knowledge.