Do you have a source for this? The idea that Bitfinex consistently uses technical issues as an excuse to prevent redemptions is speculation and hearsay. You'd think the anti-Tether conspiracy theorists could provide solid evidence for an alleged $68 billion scam.
But of course, the large numbers of users on reddit, twitter etc complaining of such issues is just a bot army organised by anti-Tether 'FUDders' to spread mistruths. Bitfinex don't do that because you can't withdraw directly from them...
Can you give me some examples of people complaining about this? And I'm not talking about people sharing hearsay. I mean people reporting that they can't redeem their USDT for USD.