As someone nonpartnering, I'm always dancing on the razor's edge of relating to and having no patience for "forever alone" sentiments from alloro single people.
Because on the one hand, to be perfectly honest, yes, I am lonely! And while there's numerous factors involved in that, my being single is one of them. It's hard not to feel isolated as a single adult and I'm very cognizant of my friends, coworkers, family members etc... who have this whole category of social life that I do not.
However. While if someone individually happens to want a partner, that's fine and well and good, but 'everyone must partner off' cannot continue to be the broader social model. If your mentality is 'I'll get a romantic partner and that'll be that', then you're contributing to the problem -- for both yourself and everyone else.
Community has to be the real focus. When I think about combatting loneliness, I think about universal basic income and affordable housing, walkable neighbourhoods and robust public transit, free community events (both in-person and online), access to high-quality affordable healthcare, access to public restrooms, etc...
Even if we woke up tomorrow to find sudden cultural acceptance of permanent singlehood as an option, I and many other people would still be lonely! We need to support social infrastructure outside of romantic relationships and nuclear families at the policy level. If you have to work multiple jobs to afford a place to live or if you have a 2 hour commute because the local bus service sucks or if the best spot in town to meet new people is an accessibility nightmare, all of these things are going to stifle community and we're still going to be lonely. I genuinely do sympathize with the plight of the single alloro, but there has to be an understanding that your individual loneliness is not the end of the line.