Why add the word "professional" as some sort of attribute to skills like certified? Age is not a limiting factor to being proficient with programming skillsets

Why add the word "professional" as some sort of attribute to skills like certified? Age is not a limiting factor to being proficient with programming skillsets. If I learn PHP is in 2 weeks, go on fivver and get paid to do jobs over the next year, can I consider myself a professional? Unfortunately middle management is the biggest barrier and problem for those older, no matter the skillset. So go be a professional or whatever, just don't work for someone else call yourself whatever you want.