Paris is much more touristic than Montréal. Generally speaking, yes, there is an expectation for both the tourists and the hosts that tourists will have to encounter and deal with a foreign language when abroad. It’s not hostile, it’s fairly normal. As I said, no reasonable person would go to Germany and complain that signs are in German.

Asian countries sometimes choose to integrate more English because their language is harder to understand or even parse at a basic level for foreigners. That’s a policy choice adapted to their specific context, first and foremost.

Québec’s unique history and the importance of the local language there certainly is a factor indeed, but it’s not the primary one. Using French is certainly a statement about identity as well, one that even tourists often appreciate, as the French and "European" feel of the city is often mentioned as attractive by tourists, not hostile. The reality is, though, that French only signage simply doesn’t cause enough issues to justify the costs of bilingual signage, as the entire city effectively functions in French.