It was like this until the Krayt Dragon raid, where CG then decided to only allow certain units that were relevant to the lore.
Source? There have been units irrelevant to the lore from the Krayt Dragon days onwards.
The only Jedi present during the Battle of Naboo were Qui Gon and Obi Wan.
Hera, Ackbar, Lando (not an exhaustive list) had no relevance to the Speeder Bike Raid.
Maul, T3, Carth (again not exhaustive) had no relevance to Krayt Dragon.
I think complaints about lore-relevance are well-founded, but it’s off the mark to suggest that this is new for the O66 raid.
Most complaints about the new raid model aren’t lore-relevance related though. They’re mostly from people who want equivalent rewards without any additional resource investment.