As an investor, I would very much prefer them to focus on what's profitable. I can invest my dividends/buyback cash into long-term successful renewable energy businesses, if that's what I want to be in. There's no need to have Shell make those decisions for me.
Now, if there's a synergy in there — somewhere where an oil company is uniquely positioned to implement renewables — that would be nice. I'm not sure if any such thing exists.