Most of what Lua offers will not be a requirement for what the ad ops team needs to create and maintain campaigns and there will be specific requirements that are not easily expressed in Lua.
But this was in spring of '95. Ruby released later in December of that year. Lua was first publicly released in '94. I learned about the existence of these two a few years later (Lua first, and then Ruby via RoR).
mea culpa: there was no reddit or github or HN back in '95. Usenet would have been helpful but it wasn't on my radar in those days. I was just 2 years out of architecture grad school, and not exposed to the CS communities in my student years.