And I definitely remember seeing old memes still being used after their debut “era” - I remember seeing some from the “experimental” era (1995-2004) like the Dancing Banana, All Your Base Are Belong to Us and less-commonly YTMND and Homestar Runner references in the Classic Era (2004-2009), and likewise I saw memes from that era (Pingas, demotivational posters, Leeroy Jenkins jokes/references, Chuck Norris, Over 9000, Keyboard Cat, etc) still being used well into 2012-2013 despite that already being a new “meme era”.
And as I mentioned in another comment, Rage Comics and Advice Animals still persisted into 2014 (mostly dying/fading into obscurity around 2015), by which point “dank” memes were already at full swing; and I definitely recall still seeing some Surreal Memes in use around the early 2020s, so I’d say the boundaries of meme popularity are fairly fuzzy.