Is the number of devices that C is running on a good metric? I think the number of developers or number of projects using C makes more sense to track. And then

Is the number of devices that C is running on a good metric? I think the number of developers or number of projects using C makes more sense to track. And then get the market share. If there are 10x more devices today than 10 years ago then I'd sure hope C was running on more devices but anything less than 10x means C is losing ground.