Have you considered who are the Hezbollah beyond their activity against Israel's crimes? Having one shared cause does not make them worthy of support, unless you do share more than that with them maybe. https://www.hrw.org/news/2023/08/01/anti-lgbt-rhetoric-undermines-rights-lebanon
Yes I would consider the Resistance illegitimate if they conducted attacks for an ideology that doesn't respect democracy and human rights.

Pink washing? Where?
Yes, I am applying the same standards everywhere. Please don't assume I support Israel's government because I don't support Hezbollah, I hate the nefarious ideology and the crimes of both of them.