No. The author pointed out there are over 100 OSI licenses, not over 100 new OSI licenses. Many of those are pre-existing licenses, superseded licenses, etc.
OSI approved a bunch of pre-existing licenses when it was still establishing itself -- that is, they did not require a "gap" to exist at that time, so your question is based on a flaw premise.
For quite a long time now, they've been trying to get people to use the already-approved ones.
https://opensource.org/licenses/review-process