Possibility to show published date as well

[therj]

Detail Requirement:

• To be used with shortcode
• Show 'Published On Dec 19, 2019' if not updated or updated within set gap. 'Published On' being the default text.
• Otherwise show 'Updated On Dec 19, 2019'. 'Updated On' is the default text.

I think it is already possible for themes whose template is supported, WP Last Modified Info replaces the existing post date that comes from the theme.

I need to insert it via shortcode, it can be two shortcodes (published & modified) but only one should be visible based on settings.

Update:
I made it work via replacement Text or HTML Replacement. Minor problem I noticed is that it requires to match the exact number of spaces as well. May be we can clean up a bit on that.
Of course, placing publish date from plugin itself would have been much elegant.