I'm 66 and my significant other is 67. Over the past 30 years, she has dutifully watched 1 or 2 episodes of the various anime that I raved about and yawned... never watching more than 2 in any given series.
And then came Ascendance of a Bookworm...
She binge-watched the English dub version 3 episodes at a time until she had seen them all, and then watched the remaining 15 or so episodes in English subtitles two-at-a-time, despite being so severely dyslexic that it was physically painful her to both read and watch TV at the same time.
After the first series concluded, she then read the English translations of the light novels back-to-back-about 12 in a row - and avidly reads each new novel as it is translated (did I mention the painful dyslexia?).
She just finished light novel 15 and is awaiting the release of the next one at the end of October (2021). Her stated intent is to not only read all 27 light novels as they are translated, but to watch every season of the anime as it is released (even in subtitle form) and then read and watch the planned sequel.
My impression is that the series appeals more to older people, even/especially those who have never even heard of anime or Japanese light novels and that the series (animated and written) is being marketed to entirely the wrong demographic.
The older you are (until dementia has totally set in), the more likely it will be that you will enjoy the series... far more likely than if you are a regular anime fan as, other than officially being an Isekai ("other world") story, it is so radically different than all other anime out there that it is only by accident that any typical anime viewer might enjoy it.
10 out of 10 for being the only anime my significant other has ever binge-watched.
