They're partially owned by Tencent, a big Chinese company. And as Chinese companies are, the government has direct influence over them. And while Tencent is not a majority owner, Tim Sweeney happily took Chinese money and now pays his co-owner a portion of the profits which then go to pay for Chinese gulags.
There are many things, especially hardware, where it's impossible to avoid Chinese companies but simply buying games somewhere else is super easy. It's obviously not a perfect system because even on GOG there are games using UE, but just buying games somewhere else is such a low barrier, it's not an inconvenience at all.
That said, claiming the free games doesn't help them. It helps the developers making those games because Epic has to pay them and won't get anything in return if that doesn't result in users leaving money in EGS for other things.