Standards such as G.711 and co don't "enforce" a latency because they can't. Latency is a property of the network, not the traffic.
You cannot use terms such as "PCMU and PCMA voice frames are 20ms or 40ms" because that makes no sense whatsoever. PCMU and PCMA are protocols that traverse a network - they do not define it.
I'm old enough to have used circuit switched telephony for some years and perhaps you are too. I recall it as being largely latency free, in that a call never sounded weird unless a satellite was involved, in which case the call costs were horrific and you ended up doing a sort of informal form of radio protocol to talk, which generally ended up in a rather scrambled mess of a conversation.
I can remember amassing a stack of 20 10p coins and calling my mum from the UK to West Germany in the '80s and having to feed the coins faster than I could talk. I sent an aerogram later.
Scaleway is a huge abuse platform, the same IPs on their network continue day after day to blast out login and bruteforce attempts. Drop their ranges and suddenly your logs get a lot quieter with no user facing impacts.
VoIP.ms is hard to port into and out of, I've repeatedly seen them drop part of the account number when transferring a number, then drag their feet for days thereafter on resubmitting the port.
Always ask for the Port Order Number (PON) so you can follow up with the other carrier to see what they received from VoIP.ms
Google Voice is requiring ID verification now, and porting your phone number out is difficult as they charge an unlock fee and you get to deal with Bandwidth.com's port out shenanigans as they are the real underlying carrier for Google Voice.
What can be open sourced (GrapheneOS) already is, and the remainder is business logic that they have described for the MVNO that is likely carrier specific and tied to the oddball MVNO platform they are using.
Very hard to make the latter usable by anyone else IMO.
Mitigating SIP and TDM spoofing requires broad cooperation among every other Telecom provider. That doesn't exist today, you can't prevent people from spoofing your number.
There is a lot of money floating around major cities in the US. So many nonprofit entities are preserving some cultural niche thanks to their older patrons using their qualified minimum distribution to fund a long lasting endowment.
I feel like you see this less in other parts of the world where people don't have tens of thousands of dollars from their retirement savings that they have to take out each year, and they would rather give it tax free to their favorite nonprofit than take a haircut with taxes and then do nothing with the money
The difference is in other countries the government decides to invest their own citizens' tax revenue in whatever cultural projects they decide, versus in the US where individuals decide for themselves to do it.
reply