]Culture changes, we have more of our traditional Austronesian culture than Indonesia as Indonesians have about 60-90% Indian & Arabic loan words, whereas Philippine languages have generally 60% Austronesian words left (40% Spanish & Malay words). What does this say of English? It is said English, a Germanic language, has almost 90% loan words originating from Latin, have they lost their culture? Having Spanish influence over Indian/Arabic, does not mean you've lost your culture a lot more than the latter, both are foreign cultures to native Austronesia.
Actually yes, I think Philippines retain most of Austronesian tribal culture and language than Indonesia, while we absorb more Indian Hindu-Buddhist and Islamic-Arabic culture and loanwords.
Yet Indonesia is so diverse and vast. In Indonesia actually we have the ethnic counterparts that retain most of their Austronesian culture, and for centuries impose self-isolation, and reject Hindu-Budhist and Islamic beliefs. They are the Torajans, Dayak, Nias and Bataks. They just recently adopt Christianity in early 20th century. And unlike the heavily Catholics-influenced natives of Philippines, I think they just nominally Christian, (I hope they stay that way). They still adhere their native Austronesian tribal culture. Some of the coolest Austronesian art and architecture can be found in Toraja in Sulawesi, Batak lands in interior North Sumatra, and isolated Nias island.
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Toraja
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Nias
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Batak
But we must admit, the Dharmic (Hindu-Buddhist) civilization developed in Southeast Asia, as we seen in Angkor in Cambodia, Borobudur in Java, and Balinese art and architecture, has blossomed into such wonderful culture, they has their own charm, civilized, refined taste, sophisticated culture, and a perceived glory. Over a millennia of dharmic influence in Indonesia, Cambodia, Thailand and Myanmar has left their mark in our shared culture, similar yet different to those in India. This has led the misconception that the underlying Austronesian culture is not that civilized enough, which is not true.
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Mahakarya Borobudur dance
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Sita in Javanese Ramayana dance
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Prambanan Hindu temple, Yogyakarta, Java, Indonesia
Indonesian (esp Javanese, Balinese and Sundanese) has been heavily influenced by Dharmic civilization, (Hindu Buddhist), later Islam-Arabic, and Christian-European through Dutch colonialism.