These days designers are encountering more and more files created in programs like Canva. However, CorelDRAW can't open the pdf files generated reliably. It is my understand that this is because CorelDRAW uses older technology that struggles with the updated format that Canva and other programs use. It would be very useful to have this option updated in CorelDRAW.
I agree that a parser update would be great, but the blame shouldn't be entirely on CorelDRAW. PDFs exported from modern web apps like Canva are notoriously messy under the hood because they are essentially just web elements forced into a PDF container. They often contain fragmented paths and excessive clipping masks, fundamentally lacking the structural compatibility required for traditional vector editing. In fact, users of other standard DTP software like Adobe Illustrator frequently report the exact same issues when opening these web-generated PDFs (e.g., https://community.adobe.com/questions-671/unable-to-place-canva-pdfs-in-indesign-error-messages-and-workarounds-892607 ). The root problem is often the non-standard file structure generated by these modern apps, not just the older software trying to read it.