I trust LCSC so far, and they're also much cheaper than digikey, mouser, farnell and RS.
In some cases I'm prepared to pay the higher price but not always. The chinese manufacturers buy in china, because they have built up knowledge about who is reliable - but those well known western distros are charging you for their stock levels, their ability to sell you 1 or 1000, etc. This is especially true of RS who are really only sensible for prototypes and engineering jobs, not manufacture.
I agree about whatsapp. I have no interest in communicating via social media. Though a legit chinese supplier is quite likely to use Wechat. Perhaps the OP thinks it's the western equivalent but imho it's just another Meta sinkhole.