It is a good idea to automate this to speed up things. Frankly, I'm glad Gamepress take their time to provide accurate info and doesn't choose the Niantic way of releasing stuff (publish something broken and then fix it and hope someone didn't notice they got it wrong the first time).
Additionally, none of those spreadsheets factor in type advantages and metagame, which is what separates Gamepress' ratings from the mere damage/battle calculations that most other sources provide.
If people are eager about ranking their movesets, they can get hold of a spreadsheet and do their own analysis, or ask other people on here who have. This is a Q&A section, and I'd rather see some activity and discussion on here than reducing the number of discussions because they would be "obsolete" :)