Sorry, guess I didn't realize that only interaction with peers is capable between 7am-3pm, Monday through Friday. From what I have heard kids tend to socialize with each other outside of normal school hours. Believe it or not, but there are probably plenty of homeschool kids in almost any residential area, not just your own. Sometimes they are allowed to leave their locked basement dwelling during the day and interact with all sorts of people. Young, old, Gen Z, millennials, boomers, etc. Also they are involved with sports, arts, debate, music, and every other sort of extracurricular activity you can think of. Occasionally, they might even run across a public school child accidently, although rumor has it sometimes they even date/marry kids who attended public schools.
I would say it is safe to say they interact a good amount, but don't agree it is clearly less. (Insert sarcasm emoji)
For what it is worth, there are good/bad homeschool situations, which is every bit the same as good/bad public school situations. Some people can homeschool, some can't. Some public school teachers can educate, some can't.