Are you a structural engineer again? That you're so sure?
even if I was not addressed: you don’t necessarily have to be a structural engineer for that (by the way, structural analysis is included in many engineering degrees in the form of technical mechanics, including calculation of such load-bearing structures). If reinforced concrete columns are sufficient for huge load-bearing capacities of high-rise buildings, industrial buildings, etc., then they will probably support the few tons of the intermediate ceiling. Because the upper floor exterior walls, the roof structure, etc. load on the ground floor exterior walls.
The problem here will not be the column, but the bearing surface for the beams on which the ceiling then rests. As I see, beams are being concreted here? There is a risk of shearing at the column if the bearing surface is too small.
One solution might have been a vertically standing, cast-in steel beam as an I profile (as a column) and on top of it a laid-on steel beam also as an I profile as a beam. The ceiling laid flush from right and left into the I profile, then it would even be an invisible beam. Steel construction is not everyone’s thing in classic single-family house construction and as you can see can also be avoided and manufactured more cheaply.