It sounds promising, but also a legal nightmare if they expect users to be competent enough to read instructions and replace batteries without causing burns or fires.
Just don't use a VPN when creating an account, since reddit will likely flag the account as a bot/spammer.
You can and should use a VPN normally after you've created the account. Might be smart to wait a week or so after making the account to start using it on your personal devices though, just to seem less suspicious. Also, make sure you have MAC address randomization and no stored cookies if using the account on the same devices that you used with your banned account.
Go to a library, create an account on the public computer there with whatever email works. Creating accounts on VPNs with non-mainstream email addresses draws suspicion.
Oh it's Knightscope. Dont worry too much, those robots are pretty shitty. https://www.theverge.com/tldr/2017/7/17/15986042/dc-security-robot-k5-falls-into-water
https://metro.co.uk/2019/10/04/police-robot-told-woman-go-away-tried-report-crime-sang-song-10864648/