The question is how much you need to avoid sudden, large, non-normal-warrantied repair costs/inconveniences, or how risk averse you are.
See if you can find an Accord forum.
I got one with my 06 Ridgeline, but mostly b/c it was a new 'untested' model, and was my first Honda.
The Ridgeline Owners Club was chock full of helpful info on that topic (and others).
For instance, they moved production from Canada to the US, and the first few years out of the new plant had quite a few (minor but really annoying) problems...all of which I learned about on the ROC forum.
I gather that if you shop around you might save a bit, but if you plan on staying with a particular dealer for service, having it can simply eliminate questions about 'who pays' on some little things - with my dealer it was a bit like being in a 'platinum club'.
In my case, it's turned out the Ridge is so well designed & bolted together it's hardly needed any service, and only a few minor items were covered by the extended warranty. At that time they also offered several different extended warranties; I got the cheapest/shortest, around $600 IRCC, for 5 years? Little did I know that 13yrs later it would still be looking, and driving, like new, gol' darn it.
Knowing what I know now, I wouldn't have spent the money, but still think it was a good risk mitigation strategy at the time.
Those new Accords look sweet - and with a manual box? Sweeter!! Have fun with it!!!