Contributor to Reddit stated: “The resurrection is not sufficient to demonstrate the truth of Christianity.”
The resurrection and belief in same are foundational to Christianity and eternal life. Without the resurrection, there is no hope because we will all die in this body and have no part in the Kingdom of God which will only be occupied by the faithful angles and those redeemed of mankind in glorified resurrected bodies like Messiah’s. To deny the resurrection is to call the Holy Spirit a liar,
20 But our citizenship is in heaven, and from it we await a Savior, the Lord Jesus Christ, 21 who will transform our lowly body to be like his glorious body, by the power that enables him even to subject all things to himself. Philippians 3:20-21 (ESV)
Believing that Jesus was resurrected from the dead for our justification is part and parcel to our salvation,
8 But what does it say? “The word is near you, in your mouth and in your heart”—that is, the word of faith which we are preaching, 9 [e]that if you confess with your mouth Jesus as Lord, and believe in your heart that God raised Him from the dead*, you will be saved; 10 for with the heart a person believes, [f]resulting in righteousness, and with the mouth he confesses, [g]resulting in salvation.* Romans 10:9-10 (NASB)
To deny the resurrection is to deny the work of the Holy Spirit,
But if the Spirit of Him who raised Jesus from the dead dwells in you, He who raised Christ Jesus from the dead will also give life to your mortal bodies through His Spirit who dwells in you. Romans 8:11 (NASB)
I disagree with you and believe that the death, burial and resurrection of Jesus Christ and the 500 men and women who witnessed Messiah’s resurrected body are the core tenets of Christianity and without the death, burial and resurrection of Christ, mankind has no hope.