bawolffTypically this just means you have to create an account.
Mobile ips are often blocked because of the sheer amount of spam and they switch so much that its difficult to block individual offenders.
Sometimes yes, but usually not at a mass range level except in extreme circumstances.
The block in this case appears to be this one: https://meta.wikimedia.org/wiki/Special:GlobalBlockList?targ...
In that specific case, logged in users are still allowed, however you cannot create new accounts when visiting from that range, so you have to already have an account, or go somewhere else to create one.
The error message blocked users get should link to https://en.wikipedia.org/wiki/Wikipedia:Advice_to_T-Mobile_I... with more info on how to still edit.
Well yes, the entire point of a private relay is to make it impossible for websites to be able to distinguish between you and a spammer.
There are exceptions to this policy, but you generally need to have a really good pre-existing reputation to qualify https://en.wikipedia.org/wiki/Wikipedia:IP_block_exemption