Uhm, I'm not following you. Historically, employees who "expressed political opinions" would typically support leftist/progressive views that their employer would disagree with; hence why laws were passed to protect their rights in this area (at least in Europe). So I don't think anybody on the left was ever "happy" that an employer could fire someone for their political position, as a general concept.
What might have some support is the idea that an employer could fire someone holding positions that are incompatible with the majority of other employees. We can argue about the best way to regulate this, but it's a different and horizontal view of determining the boundaries of civil coexistence.
What might have some support is the idea that an employer could fire someone holding positions that are incompatible with the majority of other employees. We can argue about the best way to regulate this, but it's a different and horizontal view of determining the boundaries of civil coexistence.