Checking correctness for multi-target rules

Multiple targets can be specified in a single make rule. While they are written only once at such a place, the make software usually expands the specification into several rules with the same recipe so far.
But this does not happen with pattern rules:

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Pattern rules may have more than one target. Unlike normal rules, this does not act as many different rules with the same prerequisites and recipe. If a pattern rule has multiple targets, make knows that the rule’s recipe is responsible for making all of the targets. The recipe is executed only once to make all the targets.
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• This technical detail has got important consequences on the handling of dependencies for (parallel) software builds because of multiple output files by special commands.
• How do you think about details from previous development discussions?

Can a variant of the command “remake --targets” help to identify questionable multi-target rules?

Start with the remake --targets command and the linked GNU Make documentation on multiple targets and pattern rules. Compare the behavior described in the linked development discussion and determine whether the command can identify questionable multi-target rules; done would require a settled scope and corresponding implementation or documentation.