Ari-f, that seems a little harsh.
Children are self-centered creatures. Having guests at the Shabbos table is nice as far as being mechanech them to do Hachnasas Orchim. But a lot of kids will enjoy Shabbos if they have their parents’ undivided attention at the table. They’ll enjoy talking and eating and singing and spending time together during Seudos Shabbos. Yes, even if that includes a little bickering with their sibs. I don’t know if sm29 has kids. But I’ll bet if he does, they enjoyed the Shabbos project without any unfamiliar guests.