Sam Altman is ready to "decelerate" the pace of development

Supposedly the change of heart came after “the first security incident that I have felt very viscerally,” the Huggingface escape. To me it sounds like he’s worried about the competition breathing down his neck and wants someone to come in and call a time-out.

He wants regulations to kill the competition. Open source is gonna get fucked in the coming months. The whole media campaign has been specifically for this.

Sorry if this is a dumb question but I keep seeing open source and open weight when talking about LLMs. Are these two terms interchangeable? If not, what do they mean and which is correct?