tbh that's in mostly an exaggeration, specially among new gens who tend to do more quick lunchs and take-aways.
Even though we have lunch significantly later than the european average (I'd even say closer to 2pm or even up to 3pm rather than 1pm), something that somewhat awkwardly here I agree it's excessive, I doubt anyone (unless they're exploiting the cultural-difference thing and somehow it's working) stays until 5pm lunchin' midweek.
Perhaps it may only be applicable in the context of the weekend (when lots of gatherings at bars and tapa overdoses for who-knows-how much time happen), but overall for at least 5 out of 7 days a week that's an oversimplification.
Same for me, in most situations I feel like 2 people (me included) is the perfect number, as I find it to be the only way for a conversation not to diverge from its pivotal argument ~2-3 minutes into it at maximun. Though sometimes when I feel more talkative 3 people is somewhat like a sweetspot, in disagreement with the article (for me personally) when the irl server reaches four it usually feels to me like a point of no return I wished we didnt get ourselves into.
Curiously enough, here in Spain they're still pretty common nowadays, as lots of houses purposely incorporated green awnings, both to protect an exponentially-growing number of these houses from harsh sunlight during summer season, and to presumably 'soften' the arrival to the city of an increasing quantity of newcomers from rural Spain, as they already were very familiarized with them and, the designers thought, would find spots of green on the building more appealing comming from a greener countryside.