Missing outdoors monuments

[tmorell]

Hi,
I have noticed that there are several outdoor monuments missing (POI) on OFM which are present in OSM.
Some examples:

• node/5553620310: Loba Capitolina romana
• way/368806508: Monumento a Daoiz y Velarde
• node/4728973348: Monumento a Jacinto Benavente

I tried on Matputnik by removing the filter and bringing all POI into view.
Questions:

1. Why are these missing?
2. If self-hosting, is it possible to bring all POI?

Thanks!