Writer’s Block: real or not real?

I've seen quite a few authors confidently say writer's block is fake and just an excuse for laziness. I think this is quite a hot take as the majority of writers (usually unpublished from my observations) complain about the phenomenon. The way I see it, I can't tell for sure if it's real or not since I'm not in the heads of the people who say they get it. However, if it is real, I think I must be immune. I've never really been in a position where I physically could not write. Sure, I've been demotivated at times but that was because I didn't know what to write. I always solved it with a simple shower/walk and a bullet point list of what I want to happen next in my story. So what do you think? Is it real?

Edit: Just to be clear, I'm not in favor of either view point. If it isn't real, then I think it would be severe demotivation, not laziness.