If you support the Palestinian peoples and the cause for peace or one of the various proposed solutions for long term peace, there’s no problem. Debate and differing opinions are expected.
Hamas though is a terrorist organization. Internationally recognized as such almost universally. They started this war with rape, murder, and kidnapping of innocent civilians. If you do business with them you’re breaking the law. If you give voice to them or publicly support them you are an enemy not only of your own country, but of peace and good sense. I have nothing but the harshist judgement for someone openly claiming to support Hamas.
If I found out my company had relations with Hamas I wouldn’t protest, quit, or cause a scene, I’d call the FBI. That is not a political issue, it is a serious legal and moral issue.