Earlier quoted context omitted.
I truly feel for your loss. Two of my grandparents have gone or are going through dementia. I don't think that this has any bearing on the existence of God, however. Humans are the ones who have created such an overwhelming and toxic physical environment and disconnected social one. For God to truly endow us with free will, He had to allow us to fail, even this miserably, and to cause our contemporaries and descendan…
If freewill is so sacred why does the OT and NT have so many examples of freewill being removed? Like in 2 Kings 1:10 and other places, if God is fine with freewill being ignored, and God never changes, then he can act, and if he can act would he not be considered unjust by Jesus words in Luke 18:1-8? Not a gotcha or academic question, just something on my mind recently.
But I do see what you're asking — how God seems to step in more often in the OT. Thinking of all of human history from ~4000BC until now where Mankind "grows up" over time, the concept of God as Father works — parents put a lot of restrictions on their kids when they're young to keep them safe, and remove those restrictions over time. Even if the child does something unsafe at a certain point a parent just has to say "now that you know the consequences, you have to live with them."