Yes, in the sense that I think the system of closed scholarships at some colleges no longer exists - that is, a number of places allocated to specific schools (often with an historic link to the college) which could be filled each year regardless of the candidate's attainment, or with a lower bar.
There has been a drive to make Oxbridge more accessible to state-educated candidates, which is great. I really don't think this means standards have been lowered - at least, I hope not. Just that the universities do active outreach to state schools to encourage them to apply and courses are run to support them in doing so.
My son (state comp) went to Trinity, Cambridge and loved it. Before anyone jumps in (which has happened!!) to say that he was given favoured entry because of coming from a comp - he got a really good First and several academic prizes.
I think that independent schools are able to give their students so much more support, smaller classes, one-to-ones, enrichment etc etc, that when they get to university and these privileges are removed - so the playing field is levelled - state-educated children, who haven't been used to all the extra support, tend to steam ahead rather like the fable of the tortoise and the hare!
(I'm not having a dig at public school children. I've worked in both state and independent schools and I wish them all well, but I think the above tends to be true.)
I'm really in favour of state-school children going to the elite universities, but I'm not in favour of the universities lowering the bar to admit them. Able children need to be identified much, much earlier - at admission to secondary school - and nurtured to give them the best chance of getting into Oxbridge. It wouldn't help anyone for these universities to lower their standards.