I think it's "safe". They are not going to put a malware on their extension as you installing the extension is how they make money. But as the company has a bus

I think it's "safe". They are not going to put a malware on their extension as you installing the extension is how they make money. But as the company has a business model around collecting your browsing data and being a gatekeeper between you and advertiser it really depends what you're trying to protect against.