Yes, in this case, there is enough contextual evidence that we can deduce the question is meant for D&D 5e.
The original question mentioned several terms that strongly suggest the system in use:
- Wildemount, a setting in Explorer's Guide to Wildemount, a book published for D&D 5e only.
- "Chronugy"gjlrad a wizard"Chronugy" wizard, likely a misspelling of the Chronurgy wizard, a character option introduced in the aforementioned book.
- Chronal Shift, a class feature available to the aforementioned wizard.
- Id Insinuation, a spell that appears in several editions of D&D.
- Legendary Resistance, a mechanic in D&D 5e that relates to saving throws, which are mentioned in the same context in the question.
When these game terms are researched together, all results point to D&D 5e references, often in the form of forums and blog posts. Nothing in the original question would suggest a system other than D&D 5e. So either the user is asking about a system so obscure that nobody has expertise in it, or the system is obvious.