Seems equally ridiculous to expect we’d ever actually see aliens in a spatially and temporally infinite universe.

It's not that I find aliens ridiculous, I find it ridiculous to attribute 3I/ATLAS to aliens and I find it especially ridiculous that it's coming from Harvard. They have billions of dollars in endowment and this is what they waste their time on? Maybe the administration was right to pick a fight with them.

Aliens existing is not ridiculous, the hubristic idea that aliens are visiting the solar system is what’s ridiculous, plus all the sensationalism around aliens from someone who should know better.