Twitter operates servers in the EU. They will have at least Frankfurt server. Probably UK and probably elsewhere.
It’s geographically closer, so reduces latency and server load (faster to complete a request, faster to discard allocated resources).
It also gives redundancy. If Frankfurt DC explodes, the system will fall back to the next closest DC (probably London).

So let’s say that the EU DC stops existing. And requests go over the ocean to the US.
Twitter still has customers in the EU. They are still making money from EU citizens. Because twitter isn’t free. It costs money to manage, develop and run. Twitter tries to recoup those costs via adverts and subscription services.
So let’s say that twitter is no longer allowed to extract money from the EU. The EU bans companies advertising on twitter.
Any companies that have business in the EU (like selling to EU citizens) are no longer allowed to advertise on twitter.
Paypal, visa etc is no longer allowed to take payments from EU citizens for twitter services.
Any EU service that has twitter integrations is no longer allowed to charge for twitter features.
Basically, twitter has no way of getting money from the EU.

Why would twitter spend money to access the EU population. It’s a cost sink. Dead weight.
There is no growth. Getting 50 million new EU users means a massive cost increase.
Plus paying for that extra load on (say) US based servers, and their international backbone links. (Just because you can reach a server on the other side of the world for “free”, doesn’t mean commercial services can pump terabytes of data internationally for free).

So yeh, the servers could stay located in the US where twitter operations HQ is. Twitter could disband their international headquarters, so they no longer have companies in the EU.
But they wouldn’t be able to get any money from EU citizens. And if they tried to circumvent the rules, then they can be blocked by DNS and BGP. So the only way to access twitter is by a VPN.
That didn’t work well in Brazil, and twitter caved in to the demands of the Brazil government.

And it’s fine to continue to operate in the US.
But if it doesn’t abide by EU laws then it can’t operate in the EU.

America doesn’t set the worlds laws

Excel is great.
It does so much that people make it do what it shouldn’t, and never think to explore technologies beyond it… Like a proper fucking database.
Then you get garbage business systems based on fragile excel sheets with bonkers macros and weird ETL pipelines to sync things.
And never try to deal with dates and timezones.

Oh, I thought it was hair die that was dripping down his face.
Make sense it was ichor leaking from somewhere

What is your home page that you need access to it so conveniently?
Besides, new tab can be set to a webpage instead of a blank tab