Windows 98 wasn't a true multi-user operating system anyway, security was a simulation. Only the NT line was multiuser at the time (and later XP through 10).
The Windows 98 issue was a bug. The example given involving Windows 7 and renaming executables is NOT a bug. If you give someone unrestricted access to the hardware, they have unrestricted access to the hardware. Working as intended.
You want someone not to be able to mess with a Windows installation? Activate Bitlocker.
That's why this Windows 10 issue IS a bug. Because it bypasses Bitlocker and allows a normal user to escalate to local admin. The Windows 7 issue is NOT a bug because it allows no such escalation (since no security was ever stopping local HDD access anyway).
The Windows 98 issue was a bug. The example given involving Windows 7 and renaming executables is NOT a bug. If you give someone unrestricted access to the hardware, they have unrestricted access to the hardware. Working as intended.
You want someone not to be able to mess with a Windows installation? Activate Bitlocker.
That's why this Windows 10 issue IS a bug. Because it bypasses Bitlocker and allows a normal user to escalate to local admin. The Windows 7 issue is NOT a bug because it allows no such escalation (since no security was ever stopping local HDD access anyway).