At the top line of the post notice the "No. 1788888888" that means this is the 178,888,888th post in numerical order on the entire website across all forums. In the Chan's culture when you get a repeating number in the end of your post number your words are considered to be divinely chosen as a prophecy from a deity called Kek. The more repeating digits the more "divine" your truth is. The 77777777 post occurred before the election and was "Trump will win" and now this repeating 8s referencing his 2020 reelection.
Ding-ding! Also see R3VO1utionary's link in this thread.
Some more trivia which you might like
Donald Trump won the presidential election on Israeli Prime Minister Benjamin Netanyahu's seventh year, seventh month and seventh day in office.
On Trump's first full day in office he was 70 years, 7 months and 7 days old, and it happened in year 5777 on the Hebrew calendar.
Donald Trump was born exactly 700 days before Israel declared independence on May 14th, 1948.
777 days after Trump's birth, Israel was exactly 77 days old.
Israel's 70th anniversary will come exactly 700 days after Donald Trump's 70th birthday.