SIARD validation too strict on LOB file/folder names. (P_4.2-3)

[stighemmer]

I would like to debate the strictness which dbptk enforces LOB file and folder names.

(quoting from version 2.1.1 of the standard)
Section P_4.2-3 states:

The individual table folders contain an XML file and an XSD file, the names of which (folder designation and both file
names) must be identical. With the exception of BLOB and CLOB folders together with their content (BIN, TXT, or XML
files, or a file extension associated with the MIME type of the lob files in case this is known, e.g. JPG), no other folders or
files are permitted.

Example
...Deleted...

Recommendation
It is advisable to normalise the lob folders and lob files and to use, for example, lob1/ and record0.bin, record0.txt, or
record0.xml instead of the actual name, or a file extension associated with the MIME type of the lob files in case this is
known (see restrictions under P_4.2-6).

This section is marked M for Mandatory.

I would like argue that the "Recommendation" part of this section is NOT mandatory. The presence of the phrases "Recommendation", "advisable" and "for example" should indicate that implementers are free to choose other folder
and file names. dbptk should not give ERROR messages for this.