People are so caught up in the 3I/ATLAS stuff, for example. Should we beam a message to it? What should we think of it? It's a circus.
Let's go back to Boyajian's Star instead. Can we really be sure the dimming is not caused by a mothership coming from that direction? It explains everything, right? Maybe that's how they communicate, by sending a paper plane and opening a large occlusion origami that says "we come from this general direction" (I'm cosplaying Avi Loeb here, satirically).
There's something about interpretation in all of this. Space is full of radio signals. We determine lots of them to be natural (with good reason).
I'm afraid proposing "we should answer" (in case of electromagnetic signals) could lead to a scenario in which people are encouraged to believe something without the means to verifying it. Some idiot group could do it just to increase the popular optimism about space in order to induce a favorable perception on the development of space technologies with the ultimate goal of just bumping some industry with money. It's the kind of world we live in right now, unfortunatelly.
If we want to be serious about humanity's place in the universe, first we need to be serious about our home right here. I don't think we're mature enough to have responsible control over technologies that could be used to send a powerful signal into space.