[address-policy-wg] Questions on Provider Independent IPv4 addresses,

Hello, I read with interest the ripe-234 document on IPv4 address allocation. It raised me the following questions on PI addresses: 1) Usage of PI addresses is not recommended by RIPE. I don't want to raise a debate on this point. However, I would be interested in knowing the reasons for this. Is it for routing purpose? 2) How could I find statistics on PI allocated addresses (by RIPE or globally)? Please apologise, if it is not the best appropriate place, where to ask such questions. I looked for the answer on the RIPE web site. But, I couldn't find the information. Regards, Thomas Levy