Not accurate, both leak very frequently.

Leaked prior to launch - Leaked Benchmarks Confirm M2 Chip is Up to 20% Faster Than M1 https://www.macrumors.com/2022/06/15/m2-geekbench-benchmark/

Leaked prior to announcement - 'M2 Max' Geekbench Scores Leak Online, Revealing Rumored Specs and Performance https://www.macrumors.com/2022/11/30/m2-max-chip-geekbench-r...

Leaked prior to launch - M3 Max Chip Around as Fast as M2 Ultra in Early Benchmark Results https://www.macrumors.com/2023/11/01/m3-max-chip-benchmark-r...

Leaked prior to announcement - Mac M4 Chip Performance Unveiled in First Benchmarks https://www.macrumors.com/2024/10/07/m4-mac-chip-benchmarks/

Leaked prior to launch - M5 Chip Achieves Impressive Feat in 14-Inch MacBook Pro Speed Test https://www.macrumors.com/2025/10/17/m5-chip-macbook-pro-gee...

Leaked prior to launch - Apple's M5 Max Chip Achieves a New Record in First Benchmark Result

https://www.macrumors.com/2026/03/05/m5-max-geekbench-benchm...

Then add this one to the list.

▲ aurareturn 7 hours ago | parent [-]

Incorrect.

  Leaked prior to announcement - Leaked Benchmarks Confirm M2 Chip is Up to 20% Faster Than M1 https://www.macrumors.com/2022/06/15/m2-geekbench-benchmark/

Date of article: June 15, 2022 10:32 am PDT. M2 announcement was June 6.[0]

I don't feel like doing it for your other sources. They follow the same pattern. You can check official announcement dates vs "leaked" dates yourself.

[0]https://www.apple.com/newsroom/2022/06/apple-unveils-m2-with...

	▲	tristanj 7 hours ago \| parent [-]
		That was a mistake and I updated it - only the M2 Max benchmarks leaked prior to announcement, not the M2. Those M2 Max Geekbench benchmarks appeared on November 30, 2022. Apple announced the Apple M2 Max chip on January 17, 2023. Similarly, those M4 Geekbench benchmarks for Mac were leaked on October 6, 2024, prior to Apple announcing the product. Apple announced the M4 Macs on October 28, 2024.