I knew her in person and can confirm this is 100% true (Taz is short for Taslima). She doesn't like to expose the fact she is from a bangladeshi/Muslim background - but there are probably some clear signs in some older videos. She doesn't have a great relationship with her family, her dad in particular. Hence the escaping to constant videos with her cousins/nieces in London and eventually deciding to leave Cardiff to live there.
As for dating, she joined one of the Muslim dating apps back a couple of years ago on pressure from her family to find a spouse. I think she spoke to a couple of guys and nothing really worked out, then her youtube career took off massively so she decided to focus on that instead. In one of her older videos you can see her talking about trying to find dates and theres screenshots of the app.
Anyway, having known her in person for quite a while before her "fame" I can tell you with certainty that the majority of the acting dumb is an act. She is a very childlike person but she also knows what works for her channel. At the end of the day she wants to make money, as we all do. I dont really watch her videos any more as we had a bit of a mutual falling out, she's a nice girl but very very "fake" and self centred, and would throw you under the bus the first chance she gets if it would progress her youtube career