I just came upon, not long ago, a critical analysis by a mekurav of Rav Elyashiv זצ”ל, R. Dov Halbertal, להבחל”ח , that expresses well the point of view of very important gedolei Yisroel about the problematic nature of the Meron pilgrimage nowadays. Although it focuses on the viewpoint of gedolei Lita, namely Rav Elyashiv, the Chazon Ish and Rav Schach, זצ”ל, commenters mention that, להבחל”ח, Rav Ovadya Yosef and Rav Shmuel Wosner שליט”א also have taken similar positions with regard to the Lag Baomer event. So you have quite a spectrum of top level gedolim there expressing similar concerns. Highly recommended reading!
Additionally, those that follow the news know about the chaos and צער that many suffered from in and around Meron this year in particular. Which reminds me of a story (brought in פניני מנהג – ל”ג בעומר, דף לח) regarding Rav Akiva Sofer, the דעת סופר. After he left Pressburg and fled to Eretz Yisroel due to the persecutions around WWII, one year he set out to travel to Meron (I am assuming to observe the goings on there). On the way, his vehicle broke down, necessitating lengthy repairs Whereupon he decided not to continue on to Meron then, even though things had already been fixed. He waited until after Lag Baomer to resume his journey, remarking that מן השמים, from Heaven, they do not allow him to go (on Lag Baomer), due to the קפידא (objection to the practice of the pilgrimage then) of his forebear, the Chasam Sofer. This shows how a גדול בישראל reacts to such phenomena. He makes a חשבון הנפש, he practices introspection.
וממנו ילמדו וכן יעשו, אכי”ר