The Biggest Plothole in History... and none saw it

Rating: 5/10 (9 February 2019)

Does anyone noticed the massive plothole here?!?!?Ok lets go back in time (no joke intended) to 1997 when the first movie came out and im gonna ask a simple question "Who did Jay become a MIB?" Because KAY recruited him!!!!
If anyone saw the first movie even Zed rejected the boy so only thanks to Kay insistance he was chosen as a MIB so, if Kay was killed in 1969, who did Jay become an MIB if Kay wasnt around?
Anyone gets this? Jay was a MIB thanks to Kay but, without Kay, who is this possible? So the whole movie is pointless and stupid they try to make it a "time-disturbance-lets-go-back-to-set-it-right" movie and they failed because they ignored the same rules they stablished from the beginning like "No Kay no Arc Net so boglodites return and destroyed earth" that was fine but they ignore Jay's whole life... it was so simple so simple they could just changed Jay's life after Kay got killed in 69 and, in the present, he could still be a cop but then Griffin intercepted him and show him "a different life" he was supossed to have (with Kay) and, when the boglodites attacked earth told him "only you can save him and save us" kinda thing and ta-da! But no they ignore that small detail about Kay+MIB=Jay MIB so NO Kay+MIB=NO Jay MIB and they make a stupid movie with, i think, the biggest plothole in history!!!!!!!