Yes ,of course there are a lot of good Thai people who respect and talk good things about Lao people and Laos. Also there are some people in this web don't like Thai that does not mean all of those people are Lao. What Siamese had done to Lan Xang in the past and those problems are still effected directly to Laos development and economic today .
Like it or not the truth is Lao and Thai came from the same ancestor . You could hate that or you could love that. That is why Lao and Thai have so many things such as culture and language and words are similar.