Anti-virus companies (Kaspersky, Malwarebytes) have flagged multiple TLauncher repack distributions as or "Riskware.Packed" . The promise of a self-contained "Java 180 + TLauncher repack" is the #1 lure for attackers.
No. You can have multiple Java versions on one PC. Just configure TLauncher to use the correct one.
When users type "java 180," they are almost certainly making a typo and actually looking for: