by isolating the discussion to only focus on waxing, you are missing the most important aspects of getting skis ready for high performance. getting the wax into the base is only part of what needs to be done to prepare the skis to glide better. also hydrocarbon waxes are cheap. scrape off the wax each time and take the dirt from the pores of the base out of play. when waxing, the dirt, oil, and micro hairs rise to the top of the molten wax. there is no benefit by adding more wax to the dirt, oil, and micro hairs already resting in the wax on ski.
what is important is that the whole process should be counted as cycles. The skis need to be waxed, scraped, and brushed many times to get the best performance out of the base.
the process is two fold, and the cycle is what gets the base to run better. there is waxing, and there is the scraping brushing cycle that makes performance improve.
repeated ironing, scraping, and brushing, helps to soften the structure of the base and remove/wear down the micro hairs.
The base can only absorb the amount of wax that the base can absorb. so that means that overindulging in the ironing of wax or hotboxing can be excessive. but the benefits of brushing, and the benefits to the base of scraping after the base has cooled continue to make the ski run faster. the other factor that makes skis start to run well is the concept of wearing in the base by "running in" the skis to further "soften" the structure and using the snow friction to polish out the "micro hairs" that can slow a ski down.
it has always been a common technique to get some of the new ski "hairs" off the base by waxing with a slightly harder wax, letting the ski cool completely, then scraping aggressively to remove those hairs from the base. The hairs are trapped in the wax and get sheared off when you scrape.
so the real issue is how many cycles, versus how much wax is getting into the base.