The person you replied to said they cannot afford a house.

That means they do not own the building in which they live. In most apartment situations, it’s impossible to make infrastructure changes to the building.

Even if a person owns their home, they aren’t just “making a hole” and insulating it. Most home owners don’t know what’s in their walls, how to tell if a wall is safe to drill into, and even fewer know how to properly seal up those holes so they don’t wind up with water ingress when the cheap caulk they slathered on gets ruined by temperatures, the sun, or pests.
Much less that it’s also not merely ‘a cord’ unless you’re fine with being handicapped by slow charging. Installing faster chargers is beyond the scope of most home tinkerers - so that’s even more cost to set up.