Should guilds with 0% activity be disbanded?

[Ibonic]

'Activity Percentile' (AP) is simply the percentage of Guild members that had put on the Guild Tag at least once within the past week (7 days). The value is rounded to one decimal.

Example: Your Guild has 48 members. 38 of them were online in the past 7 days and each had the Guild Tag on. Your Guild's AP would be: (38 / 48) x 100% = 79.2%

It should be extremely easy to keep a guild's activity > 0%; even one person can do it. So really this would only get rid of guilds that nobody (in the guild) seems to care about. In a way it makes me feel we should go by a higher percentage, but at least 0% is a start.