Sure, that's how they make more money. Which also means that the "free" base versions of the warframes cannot look too good, or nobody would buy their cosmetic stuff. I say "free", as you have to get all the materials to build them, and some of those materials are serious bottlenecks, at least for new players.
As you get the new warframe for free, I took it on a test drive. Of course, I can't do the quest, as I haven't even cleared the star chart, and the new quest is end game content. The weekly events start next week. It's nice that the frame has some good abilities for new players. Even the first ability includes a grouping ability directly in front of the player.
They also reworked the three starter frames to be more fun for new players. The abilities actually do something, even at lower levels. That's even still relevant for me. While I ditched Excalibur, I quickly got Volt, and he's better now (first ability costs less energy, he got faster with the second one, third doesn't use energy when moving shields, some range changes with the fourth).
Several other frames got a few abilities buffed, and Wukong got a few nerfs to his clone, which is supposed to make afk play impossible (half damage unless target tagged by player, now needs ammo, etc.). They also included some nerfs to AoE via ammunition economy, and a few QoL features, like not needing sigils to pledge to syndicates, easier weapon switching, etc.
Anyway, I'm aware of the fact that this is basically just a collection game. Collecting frames and weapons and make the best out of them is more or less all this is about. I don't expect this to keep my interest for very long, but at the moment, it's still fun.