I wouldn't say "clear."
Yes, missiles are weapons more associated with military operations than terrorism.
But Hamas doesn't perform "military operations" AFAIK. They don't "advance" on areas or take cities or any other goal I associate with military offensives.
The strategy, from what I can tell, is to launch missiles at civilians in order to terrorize Israel. It's just terrorism with missiles.
(And yeah, while the IDF does appear to have more traditional military operations, it is also clear that terrorizing Palestine is a specific goal. They also deserve the title.)