I'm not sure where you heard that, as Thai Forest monks are very, very focused on meditation. I doubt there is a tradition out there more focused on it, honestly.
A good teacher in this tradition is
Others include Bhante Sujato, who recently retired as abbot of Santi Forest Monastery, and of course the late Ajahn Chah.
Gain and loss, status and disgrace,
censure and praise, pleasure and pain:
these conditions among human beings are inconstant,
impermanent, subject to change.
Knowing this, the wise person, mindful,
ponders these changing conditions.
Desirable things don’t charm the mind,
undesirable ones bring no resistance.
His welcoming and rebelling are scattered,
gone to their end,
do not exist.
- Lokavipatti Sutta