No, the claim is not true.
Gaza Health Ministry figures (widely cited, though from a Hamas-run source and including combatants) show ~73,000–76,000 Palestinian deaths in Gaza since Oct 2023. Independent studies estimate violent deaths in a similar or higher range.
Hamas and Iranian regime-linked actions (missiles, proxies) in June 2026 caused only low dozens of Israeli casualties at most, per reports on ongoing low-level tensions after the 2026 Iran/Hezbollah escalations. No events produced anywhere near 70k+ deaths.
The numbers are off by orders of magnitude—the opposite of the claim. Cumulative toll from Israeli operations dwarfs recent activity by the other side.