It used to be very fintech-friendly. Now Lietuvos bankas (Central Bank of Lithuania, also the regulator) is scared and it is mostly unsuitable. New EMIs benefit from some places like the Netherlands or Cyprus nowadays.
The main benefit of Lithuania was (and is) easier access to the CENTROlink program, which is a SEPA and SEPA instant clearing system for SPIs/PIs/SEMIs/EMIs to use rather than having to pay a SEPA clearing house bank. This is much cheaper and you can process SEPAs truly for cents. Lietuvos bankas could also offer something equivalent to a safeguarding account. Institutions from other EU countries can connect it to it as well, though.
In the past, the regulation was also weaker. Now a Lithuanian EMI will not often open accounts unless the business is determined as low risk or they can 'extort' enough in fees to cover the immense compliance requested by the regulator. Unfortunately, such a case happens very often in politics, i.e. an approach starts off very lax, then they realise that they let fraud slip through, and then they overregulate to the point that legitimate business finds it hard to continue.
But it is true to assume that LB have a better understanding of PIs/EMIs than regulators in other countries, primarily because they have received hundreds of applications and even until now license 70-90 EMIs there.