Solidus character is escaped

[buddingspacer]

Does the solidus character needs to be escaped?
Per the rfc https://www.ietf.org/rfc/rfc4627.txt

All Unicode characters may be placed within the
quotation marks except for the characters that must be escaped:
quotation mark, reverse solidus, and the control characters (U+0000
through U+001F).

the solidus doesn't require mandatorily to be escaped. So is it really required ?