I do think a lot of these companies capitalise on women who don't know their worth. I do understand that some people can't leave the house or work outside, owing to inescapable caring responsibilities, but even then, there must be better-paid work than surveys. I hate the way they play into the whole 'bit of pin money' trope of the 50s housewife. Yuck.
Topcashback, quidco, etc, are a bit different. I think of them more like Tesco Clubcard points and other loyalty schemes, in that they are low-input and literally free money as long as you don't let their offers drive your buying decisions.
If you've a laptop, are reasonably numerate and not averse to a few identity checks can also do matched betting for a few extra quid. The signup offers can net you around £400 inside a month. Ongoing, I'm less convinced about the return for the effort required, but as a one off it's good, easy money as long as no history of betting.
Cashback.co.uk (formerly 20 cogs) is good also as a one-off, but I would not recommend doing the bingo/ gambling offers (or not many of them) as I found they didn't track or pay up, and it was a right ballache to claim them. And for god's sake use a new email and preferably burner or little-used mobile number as you will be forever plagued with spam for the sake of earning £150.