Spez is Steve Huffman aka Pig Boy. He is current CEO of Reddit and one of the founders. Users largely blame him for the enshittifcation of Reddit over the past couple years in pursuit of profit.

Aaron is Aaron Swartz. He was also a co-founder of Reddit. He was very dedicated to the idea that knowledge should be open and free. He got caught downloading JSTOR articles in violation of JSTOR’s ToS. The feds charged him with CFAA felonies and faced 35 years in federal prison. He killed himself while awaiting trial. Really sad shit.

The implication is that Aaron never would have stood for this sort of profit-motivated enshittification.

For more about Aaron https://en.wikipedia.org/wiki/Aaron_Swartz