What's the point of having a year's worth of savings if it's all sacrosanct? It's there to be spent on rainy days. I agree that sitting in a coffee shop drinking and smoking the days away isn't a good idea, but by all means take some time to decompress and get your head right after a blow to the ego and psyche that getting laid off might represent.
3 months in, you've still got more runway than most job seekers and can still interview and negotiate from a neutral position. You don't have to go walking in tail between your legs and begging for a job to put food on the table.
If you do it in your thirties then the moments of self reflection and wealth of unfamiliar experiences will color the way you think for the rest of your life and career.
If you are OK with that train of thought, then you most likely won't bother going away in your 60s for any other reason (being old, not fit, family, kids… whatever). So, it all looks like an argument for people who don't want to ever get out of their comfort zone even though they can clearly afford it.
3 months in, you've still got more runway than most job seekers and can still interview and negotiate from a neutral position. You don't have to go walking in tail between your legs and begging for a job to put food on the table.