Yes to put it simply. If you have no choice due to limitations then you have no choice. They will continue to grow, so keep that in mind.
It's his first time and he didn't do his due dilligence by reading and learning before growing. But I'm sure he will make mistakes and learn from them.how big are those pots? i will never understand why people put more than one plant per pot. if space was an issue you should of done less plants.