"All Bible translations are basically saying the same thing."

On the major doctrines, yes — the textual differences mostly affect minor matters.

What's actually true

The vast majority of textual variants are spelling, word order, or synonyms with no impact on meaning. Out of 400,000+ variants, only a few hundred are 'meaningful and viable' — and even those rarely touch a doctrine taught elsewhere.

What gets left out

Some variants do matter: Mark 16:9-20, John 7:53-8:11, the Comma Johanneum, Luke 22:43-44, Deuteronomy 32:8, Isaiah 53:11. But no central Christian doctrine (resurrection, divinity of Christ, salvation by grace) hinges on any single disputed text.