So, that's kinda the point. He's asking for advice on what he should do to replace a broken amp, and he's trying to make a smart choice on what is probably a substantial spend.
You are right, down the road, he'll probably want to upgrade those speakers before he replaces his amplification again. My thought was, if he goes separates, then he can, for example, decide to replace his speakers with something that might be less efficient but more pleasant sounding, and thus he could just swap out the amp with a bigger one that can feed those hungry beasts. Or he might go for ultra-efficient horns, where he'd want to play with tubes a little. Or any number of other combinations.
You might disagree. Feel free to present your counterpoint. But don't start with "you should replace the speakers first" when he needs a working amplifier.