Does a broader/faster spread increase the likelihood of significant mutations (I've seen this suggested, but I'm unclear if it was by a reliable source)? If so,

Does a broader/faster spread increase the likelihood of significant mutations (I've seen this suggested, but I'm unclear if it was by a reliable source)? If so, this seems like it may be a risky strategy, as it may, for instance, challenge your assumptions (that it "barely effects" young healthy people) or nullify your vaccine progress.