I know very little about MeWe but it is madness to trust a company with your data after all we’ve learned, especially a social network!
Whatever a business says about their service and business models can change overnight with financial imperatives, take overs, change of leadership etc. Promises and good intentions are meaningless in business. Some will stick by them, some won’t, there is no way for users to hold them to account.
The fact that the article linked by @dredd above will disappear in April because Google chose to shut down Google Plus, just as it did other popular services like Google Reader, which users relied upon and created the value in, illustrates the point.
In neither case has Google respected the partnership and attempted to work with those users to find a route that helps those users.
Businesses are not like people, they are innately selfish and sociopathic regardless of the people working for them, owning them or running them. We can trust the people, but not the business they are involved in. Too often people confuse the people with the business, and business is happy to exploit that.
We’ve seen how Google also does that with it own employees recently, seeming to respond to their walkouts, while behind the scenes lobbying to reduce protections for activist employees.
We should not be surprised when business behaves like this, we should expect it and not be taken in by assurances, claims, branding etc. How many times does Facebook have to apologise for screwing us before we realise it isn’t accidental, and the promises are just window dressing?
The true nature of business is there for all to see - we just don’t like to see it, because the reality is very uncomfortable to accept.