imo, he dove into this style heavy when he started running with MIKE and Hommy. they were already experimenting with that monotone, run-on/run-into bar structure, and earl (whose style was already trending towards less technical/eminem-inspired) started really leaning into it as well over time.
it's like they were all trying to see how far they could push past traditional notions of bar structure and rhyme patterns, while still trying to find something dope and unique in the style. i feel like all MC's do this, to an extent. but imo, MIKE, Hommy, Earl and others in that circle started to prioritize experimentation over structure, cadence and other technical confines. i didn't always love the style on Earl, but regardless of the results, i appreciated the effort.
as i read a little about his background, i also thought it made sense that he would be the member of OF to explore and challenge the confines of being a dope MC. regardless of how people felt about it.