He’s not talking about style choices, he’s talking about ships, and no two ships are exactly the same.
As a principle, CCP apply a “if you could fly it before, you can fly it after” approach to change.
So anyone that can fly the ships now, will be able to fly them after the change. However, anyone who can’t fly them now, and anyone new in the future, won’t be able to fly them, even if they have the skills, if they don’t have the standing.
That’s limiting the choice of people.
As a side effect, adds to the “if you haven’t already started the game, you don’t have any chance against the vets” stereotype, because it isn’t just a catch up on skills issue, it’s a grind specific standings issue as well (and as yet, there’s no injectors for that).
To do that, for most of the pirate side of that suggestion, the agents are not in highsec.
For the Machariel mentioned in post 4, every single level 1 agent is in either Curse, Feythabolis or Fountain. Every level 4 and 5 agent is the same. All up, of the 75 Angel Cartel agents, only 3 exist outside nullsec, being 2 level 2 and 1 level 3 agent that are in 0.5 space, but to get to them, you first have to run the level 1 missions in null.
For Sansha, 100% of the agents are nullsec.
For Serpentis, 100% of the agents are nullsec.
For Blood Raiders, 100% of the agents are nullsec.
For Guristas, all level 1 agent are nullsec. 1 level 2 agent is in lowsec, 2 level 3 agents are in lowsec and 2 are in highsec. All the rest for level 2 and 3 are nullsec. All level 4 and 5 agents are in nullsec.
So of the 369 total mission agents in those 5 pirate factions, 361 of them are in nullsec.
Unless people are prepare to go run the missions in nullsec, they’ll never be able to fly those ships, despite them providing great platforms to do so (eg. blitzing Level 4 missions in a Machariel in Highsec as an Omega will only be possible if you can already fly a Mach now, or are first prepared to go grind missions in nullsec. Nullsec residents have a huge advantage there).
That just adds to the null v high divide and removes access to ships, from highsec only players. That limits their choice compared to the current situation.