We can leave aside the obvious silliness about creatures from other worlds being able to see our winkies. Clothes are a weird exception in nature, not the rule.

But who the heck knows what an alien would consider appropriate behavior? Our history would not make the same impression on a Kzin as it would a Puppeteer.

Few life forms have ever reached a high spot on the food chain by being meek and mild. Even Puppeteers are nasty and exploitative. Just very careful about endangering themselves in the process.

I don't think we're going to find quite as many pacifists out there as hopeful and starry-eyed Earthlings think.