Yes but No
‘Yes’ to the weasel-proofed rejection, ‘No’ in the general case. For instance, this is how I sometimes enter my weight when away from home. Or I use a command line script and the API.
There are so many slippery slopes available, we need to find ways to make our community robust (antifragile?) in the face of slipperiness, not just plug individual holes. Part of that does mean giving folks ways of helping their future selves, like the weasel-proofing option.
In this context, that might mean rejecting any datapoint added by an ‘unusual’ means (for that goal). Let’s not focus too much on ‘by email’ part of this thread.