This is genuinely disturbing.
A developer was planning on sneaking data collection into a product through a sketchy terms of service. That on its own should keep the app out of any marketplace.
The subsequent claim that the developer simply forgot to include this in the TOS doesn't get any extra sympathy from me. Funny the apology only appeared after the developer got caught with their pants down, isn't it?
I think this comment said it best:
And a supplemental note from the DDG team themselves :
(copied from my response to the same post in a different community)