This topic falls under the catagory - YMMV with everyone having their own comfort level.
For example, I have a $1,000,000 Umbrella insurance policy that would cover me over the limits on my car and home owners insurance. I do not have a net worth of $1,000,000 but I don't want someone taking away my future earnings or what I do have that exceeds the $300,000 limits on my insurance. Will I ever need it? Probably not, but for a little more than $200 per year premium I'm happy. I'm also happy paying $1,600 for coverage on my power everything and infotainment system.
If anyone comes across this thread, my calls to dealer have found them selling various 3rd party or the Mazda plan which is now owned by Toyota, for well under $2,000 or even less than $1,700. Call around and ask for the finance department, then say, very casually but confidently "I'm shoppingdealerships - what plan do you sell, and what's the best price you can dell it to me for this week" - it may not necessarily be his best price, but like I said, I'm finding almost all coming back between $1,500 and $1,800.
Yes, there's technically a "right" answer and that is to self insure. I bet lots of you have phone coverage yet have never used it. Does that make the decision wrong? Nope. It's right for you. I may discuss the topic but never beat anyone up over their choice. Similarly many of you have GAP insurance = have most of you totaled a car you've been upside down on? Probably not.
Again, YMMV