Your interpretation appears to be unique. At quick search shows the common understanding to be about taking responsibility for your work and not blaming your tools. There's nothing about changing your tools:
- https://en.wiktionary.org/wiki/a_bad_workman_always_blames_h... - https://poemanalysis.com/proverb/a-bad-workman-blames-his-to... - https://idioms.thefreedictionary.com/a+poor+craftsman+blames... - https://usdictionary.com/idioms/a-bad-workman-blames-his-too... - https://writingexplained.org/idiom-dictionary/a-bad-workman-...