WTP
dont sell yourself short, your words do have much value.
And you definitely can make a definitive statement of what chazal meant. they said al peiros haiilan hu omer borei peri haeitz. Im willing to bet you are one hundred percent certain of what this means. And that is without being a Rishon or achron. (of course yo ucna be noteh your daas if a rishon learns differently than you understand the mishna)
Note at no point did I claim to definitive knowledge of what chazal meant. Hlevi made some allusions, you can discuss it with him. However what is certain (or at least shoudl be) is what it does NOT mean. The gemara Halevai cited about the Ribono shel olam wearing tefilin, does NOT mean He literally wears tefilin (would you put in probably in that sentence?)
Similarly Im not sure why you need to be a rishon to know that Avrham avinu was not a kohein/yisroel/levi melech who divorced his wife and had a ben sorer umoreh etc etc…