The licensing issues don’t come from Lunacy, they come from the assets you download from the internet, many of them can be used for personal use but not commercial use, so if you design for a client and use a particular set of icons or illustrations or fonts, the client might come back to you later saying someone emailed them regarding their unauthorized use of their assets, the client might not know what the hell is a copyright claim, theyll be confused, worst yet, frustrated with you

Penpot has a desktop app ( I don’t know if it’s available on Windows ), made by a third party developer